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Earthquakes and Heatwaves
Twin earthquakes measuring 7.2 and 7.5 struck Caracas, Venezuela, collapsing buildings and prompting aid from over 24 countries, while Europe endures its hottest summer on record — with homes, nuclear power plants, and railways all buckling under heat they were never built to handle.
What You'll Learn
1. Twin earthquakes measuring 7.2 and 7.5 hit Caracas, Venezuela within a minute of each other, collapsing buildings that were never built to move with the ground.
2. The Richter scale doesn't measure damage — it measures the magnitude, or energy released, at an earthquake's source.
3. Countries like Japan build for frequent earthquakes by letting buildings flex with the shaking ground, while places like Venezuela build rigid structures that can collapse instead.
4. Europe's historic heatwave is turning heat-trapping, fan-free homes into ovens and pushing river-cooled nuclear power plants and un-expanded railway lines past their limits.
5. More than 24 countries sent aid — including search-and-rescue dogs trained to detect heartbeats under rubble — to help Venezuela recover after the quakes.
Key Vocabulary
- Tectonic plates — Massive slabs of rock that make up Earth's outer layer, which shift and collide, causing earthquakes when they move against each other.
- Richter scale — A specific scale used to measure the magnitude, or energy released, at the source of an earthquake.
- Magnitude — The measurement of how much energy an earthquake releases; a higher number means a much stronger quake.
- Epicenter — The point on Earth's surface directly above where an earthquake begins underground.
- Search and rescue dogs — Dogs specially trained to detect human heartbeats and scent beneath rubble to locate survivors after a disaster.
- Heatwave — A prolonged period of unusually high temperatures that can be dangerous to health and infrastructure.
- Insulation — Wall padding designed to trap heat inside a building, useful in cold climates but dangerous during a heatwave.
- Thermal expansion — The way materials, like metal railway lines, expand when heated and contract when cooled.
Classroom Lesson Plan
Discussion questions, a hands-on classroom activity, and grade-band standards alignment — grades 4–9.
Discussion questions
A — Building for the Disasters You Expect
Educator prompt: Kiran explained that Japanese buildings are designed to move with earthquakes, while Venezuelan buildings, not being in a frequent earthquake zone, were rigid and collapsed. Should every country build for disasters that "probably" won't happen, or is it more practical to prepare only for what history shows is likely? What are the costs and trade-offs either way?
B — Sharing Help Across Borders
Educator prompt: More than 24 countries sent aid to Venezuela after the earthquakes. Debkanya noted that this kind of global mobilization is something both stories — the earthquake and the heatwave — have in common. What responsibility, if any, do countries have to help each other during disasters, and how might nations share preparedness knowledge, like heat management from India or earthquake-proofing from Japan, with regions facing a crisis for the first time?
C — When "Normal" Weather Stops Being Normal
Educator prompt: Kiran and Debkanya described how homes in Europe are built to trap heat for winter, not release it for summer, and that many lack fans altogether. How should regions adapt their infrastructure — homes, transport, power — when weather shifts outside what it was designed for? Is it fair to compare Europe's struggle with heat to how India already manages high temperatures?
D — Measuring Disaster Fairly
Educator prompt: The Richter scale measures the magnitude of an earthquake, but Debkanya noted that unofficial figures on deaths and missing persons in Venezuela vary widely. Why might numbers like magnitude be more reliable than casualty figures in the early days after a disaster, and why is it important to be careful about the numbers we share or repeat?
[00:00:00] Kiran: Mics, camera, action. This week we are back to geography, looking at two very important events that have happened, one which is still happening. It is in two different continents, one in South America and one in Europe. So this week we're gonna cover the earthquake in Venezuela, and we're gonna cover the heatwave in Europe.
[00:00:28] Debkanya: Yeah, both of them are what you would call humanitarian crises that are going on in different parts of the world, on opposite sides of the Atlantic Ocean. Venezuela was struck by a really, really, really bad earthquake. In fact, two earthquakes that hit them back to back. It's been pretty scary and pretty sad.
[00:00:48] I don't know if you've been watching the news, or reading the newspapers at all, but it's been quite a huge disaster that struck the people of Venezuela. There are rescue efforts still going on, but before we go into that, let's just talk about exactly what happened.
[00:01:03] Kiran: Maybe we can start with what an earthquake is, Debbie, and how is an earthquake formed?
[00:01:09] Debkanya: A lot of you probably already know what an earthquake is, and basically it is a quake or a tremor, when the Earth shakes really, really hard because a lot of energy is released. Sometimes you can see this in the form of waves. Basically, you'll see the ground actually moving in waves, which is really weird because normally you see waves wherever you have water, right?
[00:01:32] So in the ocean, in the sea, that's when you see waves. But when an earthquake happens, you see the land moving in waves sometimes if it's really strong.
[00:01:40] Kiran: In fact, the reason an earthquake happens is because Earth is made up of multiple plates, tectonic plates. And these are exactly what they sound like — think about it, just plates, one sitting on top of the other. So if you think about two plates that were sitting right next to each other, and then one goes over the other — here goes an analogy — let's assume you had some food on those plates, and one goes over the other. It throws off the food from the other plate, right? And that's exactly what happens with an earthquake. It's when two tectonic plates move apart. When they move and hit each other, then that creates a shockwave that goes all the way up to what we can feel on the surface.
[00:02:35] Debkanya: Yeah, that's right. And sometimes they can be really mild, so you'll just feel a little bit of movement. You might feel like the land is tilting a little bit. You might see some lights moving around you. But sometimes they can be really strong, and that's what's happened in Venezuela.
[00:02:51] It happened on the 24th of June, it happened specifically in Caracas, which is a place in Venezuela. Two massive earthquakes, and earthquakes are usually measured on the Richter scale, okay? This is a very specific type of measurement, it's not like a scale you use to measure in centimeters or millimeters or inches even.
[00:03:14] So earthquakes are measured on a Richter scale. Over here, the magnitude of the earthquakes that hit Venezuela were 7.2, and this was followed pretty much immediately by another earthquake, which was 7.5, in less than a minute apart, right?
[00:03:29] These are very, very strong earthquakes.
[00:03:32] So normally a mild earthquake generally measures anywhere between 3 and 4.9, right? Now this one, this one was really strong. 7.5 is really strong. And what happened was, after that — this is the kind of earthquake where entire buildings can collapse, and that's exactly what happened. Entire buildings fell down, they collapsed.
[00:03:51] People got stuck under there. The earth basically released a whole amount of energy, and that had to go somewhere, right? It's destroyed the whole city in a lot of ways.
[00:04:00] Kiran: Yeah. And I think, you know, there are certain parts of the world which are very used to earthquakes. Japan—
[00:04:07] Debkanya: Hmm.
[00:04:07] Kiran: It's very used to earthquakes. And so a lot of the buildings that are built in Japan — and there you'll feel an earthquake almost every month, right? If not more frequently.
[00:04:19] Debkanya: Milder ones, right? They're not as strong. Yeah.
[00:04:22] Kiran: Yeah, yeah, much milder. But the point is the buildings are built for that, even for the stronger ones. So the building actually shakes with the earth, and so it does not resist the earth, and that's what helps them keep things stable. Over here in places like Venezuela, which is not really a big earthquake zone till now, at least not frequent, you don't build it that way — think about it, you have a stack of Lego and you've put it on a carpet, and you start pulling that carpet left and right. That Lego stack is gonna fall very quickly.
[00:04:56] Debkanya: Yeah.
[00:04:56] Kiran: Never built for movement. It's a very rigid structure. And so that's what happens when there's an earthquake in a place like Venezuela, which is not prepared for it at all.
[00:05:09] Debkanya: Absolutely. So a lot of people are still supposedly stuck. In fact, they're saying — of course, unofficial figures — that it could be anywhere up to 10,000 people that are missing, have lost their lives, because of this earthquake. But the interesting thing again is whenever something like this happens, whenever a disaster of this scale strikes anywhere in the world, there is always a lot of help that rushes in, and that's exactly what's happened in Venezuela as well.
[00:05:36] More than 24 countries have sent help to Venezuela. This is not just in the form of money. There are people who've gone there to — like we mentioned, entire buildings have fallen down, you need manpower to remove all that rubble, to pull people out, to pull even animals out from these sites, right?
[00:05:53] So there are a lot of search and rescue dogs who've been actually trained to smell, and can hear human heartbeats from this rubble, the pile of rubble. They can find and identify where people are stuck. So that's pretty cool. So they're using the search and rescue dogs to find people.
[00:06:11] And of course, they're sending in supplies because all the people that have been rescued have been injured. They need medicines, they need clothes, they need clean water. That's one of the hardest things because when something like this happens, everything gets destroyed, right? There's no clean water, there's no food.
[00:06:25] So all of this help is reaching Venezuela, from various countries around the world.
[00:06:30] Kiran: Venezuela has been in the news for the last year or so, when Trump decided to go in and capture their president, Nicolás Maduro. So, it was in a state of flux already. This actually has not helped the economy as such. So it'll be interesting to see how they recover, how much aid is required to recover, because they still haven't cleared all the rubble and things.
[00:06:55] It's been over a week, but it's still in a state of rescue, it's not about rebuilding. Rebuilding is gonna take a long, long while. It's gonna be very, very long, the entire process for Venezuela. Have you ever actually experienced an earthquake, Debbie?
[00:07:10] Debkanya: No, never.
[00:07:12] Kiran: No?
[00:07:12] Debkanya: Somehow never. I mean, I think I did long, long ago when I was working in Delhi and I was walking on the street. But they normally say that — yeah, of all places, yep. But that's what they say. Normally if you're indoors, chances of you realizing there's an earthquake is higher because there are more things that can move.
[00:07:32] On the street, if it's really mild, you might be like — it just literally passed me by. I didn't feel much at all, and then I realized, oh, there was an earthquake.
[00:07:41] Kiran: I've actually been — I mean, not near the epicenter. If you remember, quite a few years ago, I think about now maybe 16, 17 years ago, there was an earthquake in Gujarat.
[00:07:54] Debkanya: Mm-hmm.
[00:07:54] Kiran: So I was actually in Rajasthan at that point of time, and they are neighboring states. And when it happened, I was actually in Rajasthan and it was at night. So the bed shook, felt it, and a couple of people actually fell off their beds—
[00:08:15] Debkanya: Wow.
[00:08:15] Kiran: Even all the way out to Rajasthan. So when an—
[00:08:19] Debkanya: This is the Bhuj earthquake? Is that the one you're talking about? The Bhuj earthquake of 2001. Yeah, that was a really, really bad earthquake that hit Gujarat. Many people — I think almost 20,000 people — lost their lives.
[00:08:34] Kiran: Really big one, because the epicenter was in Bhuj, but it was felt across a large area.
[00:08:40] Debkanya: Yeah, yeah. And that was also a 7.7 magnitude earthquake, so—
[00:08:46] Kiran: Yeah.
[00:08:46] Debkanya: Stronger than the one felt in Venezuela.
[00:08:49] Kiran: Imagine, I was in a state next door, not—
[00:08:52] Debkanya: And you felt it.
[00:08:53] Kiran: Not even in the same state, and I felt it and others felt it. So that's how crazy the earthquake can be.
[00:09:00] Debkanya: Really scary, but I mean, the good thing is a lot of people are still getting rescued. A lot of help has reached them. So hopefully they'll be able to save many lives and, as you said, the rebuilding process has to start as well for Venezuela.
[00:09:17] Kiran: Yep. Carrying on to the second story, which is again to do with nature.
[00:09:23] Debkanya: Mm-hmm.
[00:09:24] Kiran: Seems to be the theme nowadays. We're doing a lot of these nature episodes, El Niño, the earthquake, and now we're—
[00:09:29] Debkanya: Yes.
[00:09:30] Kiran: Europe is facing the hottest summer it has ever, ever faced. There are multiple sort of reasons why. There are also a lot of deaths because of the heat wave. In fact, some of the countries in Europe have actually said people cannot go outdoors into parks and drink, because it's actually a really dangerous situation — it's so hot that you don't feel it, you don't understand it, and then you get heatstroke, and then there can be major consequences from that. Some countries in Europe are facing temperatures which are 10 degrees higher than what they have faced before. Ten degrees. I have a cousin of mine who's in the UK, and it is 39 degrees in London—
[00:10:22] Debkanya: Hmm.
[00:10:23] Kiran: That is, 39 degrees.
[00:10:25] I mean, even in Bangalore, when you reach 39 degrees, you're like, 'Oh my God, that's—'
[00:10:30] Debkanya: I live in Mumbai and we've had those kind of temperatures here this summer. So I have to say that the heat in Europe is making a lot of headlines and it's super interesting because Europe is not used to those kind of temperatures.
[00:10:49] Kiran: Aren't at all.
[00:10:50] Debkanya: In India, we see these temperatures on a regular basis every year during the summer — in places like Delhi, for example, it can go up to 45, 46 degrees,
[00:10:59] Kiran: Yeah.
[00:11:00] Debkanya: right? Bombay this time went up to 39, 40 degrees on certain days, in certain parts of the city, right? Because some parts are hotter than others, depending on how much tree cover they have, depending on how those places have been built. Europe is facing this — not for the first time, I would say, but it doesn't happen that often, which is also why they are not at all equipped for this kind of a situation,
[00:11:25] Kiran: Yeah.
[00:11:25] Debkanya: In India,
[00:11:26] Kiran: for heat—
[00:11:28] Debkanya: yeah—
[00:11:28] Kiran: because even their houses — when you build houses in Europe, it's built to contain heat—
[00:11:35] Debkanya: Exactly.
[00:11:36] Kiran: cold, so there's padding — the walls actually have padding inside them to keep heat inside and insulate against the cold temperature. So now you actually have an oven when you're sitting inside that house, because it's trapping even more heat.
[00:11:52] Debkanya: Exactly. And they don't have fans in their rooms, which is the—
[00:11:56] Kiran: friends.
[00:11:57] Debkanya: other interesting thing, 'cause in India, fans are normal, right? Like now, of course,
[00:12:03] Kiran: yeah—
[00:12:03] Debkanya: the demand for air conditioning in India has gone up a lot and will keep growing, right?
[00:12:07] Because it's just getting hotter and hotter. Europe never needed it because, like you said, generally cooler climate, generally they prepare to stay warm as opposed to staying cool, right? So no fans even, so that's been really hard. I know those have been selling out really fast in all the stores.
[00:12:25] And there's a lot of directives from the government: stay indoors, stay hydrated. All the usual stuff. But it's been very interesting to watch how they have been reacting to the heat situation there.
[00:12:37] Kiran: And it's one thing after the other, right? The simple heat wave — not simple, fairly, fairly—
[00:12:45] Debkanya: Intense, yeah.
[00:12:46] Kiran: heat wave. But a lot of Europe actually survives on non-coal electricity for power. India is a coal nation at this point — the majority of our electricity is produced by coal. But in Europe, it's actually nuclear power plants, which is a big, big reason for a lot of their power. Now, nuclear power plants get very, very hot while they're generating electricity. Usually, the rivers in Europe flow through the nuclear power plants — it's designed in such a way—
[00:13:22] Debkanya: Hmm.
[00:13:23] Kiran: that heat—
[00:13:24] Debkanya: Hmm.
[00:13:25] Kiran: are super warm,
[00:13:26] Debkanya: Yeah—
[00:13:27] Kiran: that's not helping them reduce the heat from a nuclear power plant perspective. So things are scary. Similarly, you think about it — the Arctic, which has your two ice caps,
[00:13:40] Debkanya: Hmm.
[00:13:40] Kiran: in the north, and your Antarctic in the south — that's starting to actually heat up as well, which—
[00:13:47] Debkanya: Yeah.
[00:13:47] Kiran: will affect a lot of the biodiversity in that region.
[00:13:50] Debkanya: A lot of glaciers are just melting and disappearing—
[00:13:54] Kiran: Yeah.
[00:13:55] Debkanya: completely because of the heat. Yeah, it's really scary and quite sad.
[00:13:58] Kiran: Train disruptions in Europe again — when you're learning science, you learn that metals expand with heat and contract when it's colder, right? So it becomes smaller when it's colder and it expands when it's warmer. Trains run on railway lines, and railway lines are metal, and they have never planned for those railway lines to have a space in between for expansion.
[00:14:27] Now suddenly it's so hot, the railway lines are expanding and there are train and railway disruptions in Europe. So it's just absurd. Things that we have taken for granted, and things that we plan for and design for in places like India, which is warmer, has never happened in Europe. And now this entire heatwave is coming to the fore and becoming very, very important.
[00:14:49] Debkanya: We're gonna see more and more of this with every passing year, unless we really figure out how to stop global warming, and how to prepare for climate change as well. Both things need to happen at the same time. Till then I guess we'll just have to keep sharing the knowledge that we have in different parts of the world in terms of — okay, how do we deal with extreme heat?
[00:15:07] How do we deal with extreme cold? How do we deal with extreme conditions? And how can we help each other out, as we saw in Venezuela? Can we mobilize enough so that we can help each other out? I think that is something that is common to both these stories as well.
[00:15:23] Kiran: Yes. Given all of this geography and science, it is time now for our Quiz Question. The quiz—
[00:15:36] Debkanya: That's—
[00:15:37] Kiran: master,
[00:15:37] Debkanya: right—
[00:15:38] Kiran: over to you.
[00:15:40] Debkanya: Thank you very much. Thank you very much. The quiz question for today's episode of Takaro Kids is: What exactly does the Richter scale measure? Okay, this is an easy one for you if you've been listening. I mean, come on, you know this. I want more specific answers. I'll give you options to just make it a little bit easier.
[00:16:02] Okay? Option one is the amount of visible destruction to buildings. Option two, the magnitude or the energy that has been released at the source of the earthquake. Option three, the duration of the shaking that takes place, in minutes. And option four, the depth of the fault line in the Earth's surface where the earthquake begins.
[00:16:27] Is that what it measures? Okay, four options. I want you to give me a specific answer and send it in to us. You can either send us this answer on Instagram, you can send us a direct message or a DM, or you can get onto our website, www.takarokids.com, and enter your answer there.
[00:16:49] Kiran: Excellent. And last time, we asked you the question specific to the World Cup, the football World Cup, and the question we asked was: When was the last time, if at all, the USA hosted the football World Cup? What was the answer, Debbie, and who is our prize winner for this week?
[00:17:13] Debkanya: Well, the answer is the US last hosted the FIFA Men's World Cup, the Football World Cup, back in 1994, and the correct answer was sent to us by a little boy called Agastya. So congratulations, Agastya. That is the correct answer. Well done.
[00:17:30] Kiran: So Agastya, you're gonna get your gift certificate, and do make sure that you talk about Takaro and spread the word about Takaro, and also keep participating — because it doesn't matter if you have answered before, won before, never won before, it doesn't matter. Just keep answering.
[00:17:48] Send us your answers and you could be the lucky winner for this week's episode — what does the Richter scale measure? And until next week, it is bye-bye.
[00:17:59] Debkanya: Goodbye.