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Hello, my name is Mrs. Mehrin, and I'm really excited to learn all about what carbon is with you.
Let's begin.
Welcome to today's lesson from the unit, "Climate change and sustainability." Your learning outcome is, I can explain that carbon is in many things, and only some forms are harmful.
Now, I know that learning can sometimes be a little bit challenging, but that's okay, because it just means that we are going to work really hard together, and we're going to learn some fabulous and new things.
So let's begin.
So here are your five keywords for today's lesson, alongside these keywords are your definitions.
Now I am going to be referring to these definitions throughout today's lesson.
However, if you find it helpful, you can pop the video on pause, and you can have a go at jotting these down now.
Off you go.
Fantastic.
Well done.
So our lesson is split into two parts today.
Let's begin with the first part, carbon.
So carbon is a substance that can be found in different forms. Diamonds and graphite, which pencil leads are made from, are both made from carbon.
These forms of carbon are harmless.
So diamond is a very hard, is very hard and transparent, and graphite is soft and opaque, it also conducts electricity.
So diamonds have very different properties to the graphite in my pencils, how can they be made from the same thing? Well, it might be helpful to think of carbon as being like eggs.
So eggs can be raw, they can be scrambled, or they can be hard boiled.
Here we've got some pictures of raw eggs, scrambled eggs, and hard boiled eggs.
And they can have different properties, but they are still eggs.
And so, carbon can be in many forms with different properties, including diamonds and graphite, but it's still a carbon.
Now something and something are made of only carbon and are harmless.
Can you remember which two we were just discussing? Is it A, wood.
B, air.
C, graphite, D, diamonds, or E, eggs? I'll give you five seconds to think about your answer.
Off you go.
Fantastic.
Well done.
The answers are C and D.
Now, eggs can also be an ingredient in other things like cakes, pancakes, and custard.
These all have different properties to each other as well.
So just like eggs, carbon can be in other solids, liquids and gases.
Now, some things that you might have used that contain carbon include chalks, used for drawing, all types of plastic, and charcoal used on barbecues.
So even you contain lots of carbon.
Carbon is in all living things.
Now because carbon is in all living things, it can also be found in any products we use that have come from living things.
So furniture made of wood, clothes made of wool, or cotton and paper made from trees all contain carbon.
And all of the food we eat also contains some carbon.
Now carbon is in all fossil fuels, including coal, crude oil, and natural gas.
This is because fossil fuels are made out of the remains of living things.
So let's do a quick check-in of your learning before we continue.
So carbon is in something such as natural gas, coal, and crude oil.
So A, renewable fuels, B, fossil fuels, C, electricity or D, solar power.
So I'll give you five seconds now to think about your answer.
Off you go.
Fantastic.
Well done.
The answer is B, fossil fuels.
Now carbon is also in carbon dioxide, and we can't see, smell or taste carbon dioxide, but it is in the air around us all the time.
Now, which of these statements is correct? A, carbon dioxide only contains carbon.
B, carbon is in carbon dioxide.
Or C, there is no carbon in carbon dioxide.
I'll give you five seconds to think about your answer.
Off you go.
Fantastic.
Well done.
The answer is B, carbon is in carbon dioxide.
Now your first task says, identify eight things in your classroom, or the room you are in now, that contain carbon.
So I'll give you some time now, I'd like you to pause the video here, and have a go at doing that.
Off you go.
Fantastic.
Well done.
So you may have said things like, Andeep has found these things, wooden table, plastic chair, plastic water bottle, plant, wood and lead in pencil, carbon dioxide in the air, paper notebook and me.
Now, task two says, look carefully at the pictures, and identify as many things as you can that can contain carbon.
So here's your first one.
Here is your second picture.
So what I'd like you to do now is to pause the video here and have a good at doing that.
Remember, you can rewind this video as well to go back to the other picture as well.
Okay, so I'll give you some time now.
Off you go.
Fantastic.
Well done.
Okay, so let's have a look through the answer.
So the plant, plastic phone case, wooden furniture, the pine cone, the coal, the wooden furniture, the plants, again, there's more plants there.
You might have said like the wicker basket at the bottom too.
So did you notice anything else? And here you might have said, human, cotton clothes, natural gases, plastic candle, food, and the air, which also has the carbon dioxide as well.
Now we are on to the second part of our learning, which is carbon dioxide.
Now, even though we can't see it, carbon dioxide is around us all the time as a gas in the air.
And carbon dioxide is very important for plants, as they need it to make their own food.
And without carbon dioxide, plants would not be able to survive.
Now, carbon dioxide is not usually harmful to humans or other animals.
We breathe in and out air, which contains carbon dioxide, and it's also the gas that is inside the bubbles in fizzy drinks.
Now, when fossil fuels like coal, crude oil, and natural gas are burned, carbon dioxide gas is released.
So this happens in lots of places.
For example, many houses have boilers which burn natural gas to provide warmth, or have stoves which burn natural gas.
And many cars are powered by burning petrol and diesel, which are made from fossil fuels.
Now, fossil fuels are also burned in power stations, which provide us with much of the electricity used in our homes, our schools, and other buildings.
Now, let's do a quick check-in of your learning before we continue.
So what is created when fossil fuels are burned? Is it A, coal, B, crude oil, C, natural gas, or D, carbon dioxide? I'll give you five seconds to think about your answer.
Off you go.
Fantastic.
Well done.
The answer is D, carbon dioxide.
Now, although carbon dioxide isn't directly harmful on its own, increased amounts of carbon dioxide in Earth's atmosphere can cause problems. And the atmosphere is the layer of gases that surrounds Earth.
Now, some types of gases, including carbon dioxide, create a sort of blanket around Earth, trapping heat from the sun inside the atmosphere, and this causes the temperature on Earth to rise.
And the gases that do this are known as greenhouse gases, because they trap heat like a greenhouse, making it warmer than the outside.
And Jacob says, "I like warm weather.
Why is it a problem if the climate on Earth becomes warmer?" What do you think? I'll give you five seconds to think about your answer.
Off you go.
Fantastic.
Well done.
So warmer temperatures can make it harder for plants and animals to survive.
So for example, melting ice caps means there are fewer places for animals that live on ice, like penguins and polar bears, to find places to rest or shelter.
And warmer global temperatures also have an impact on the weather with extreme weather events like storms, floods, and heat waves becoming more likely.
Let's do a quick check-in of your learning before we continue.
It says, why do increased amounts of carbon dioxide in the atmosphere cause problems? Is it A, because it makes the airs smokey and hard to breathe.
B, because carbon dioxide is poisonous to living things.
Or C, because it increases global temperatures.
Again, I'll give you five seconds to think about your answer.
Off you go.
Fantastic.
Well done.
The answer is C, because it increases global temperatures.
Now here is task B, Laura says, "Carbon dioxide is a greenhouse gas that is harming our planet.
There should be no carbon dioxide in our air." Now, do you agree with Laura? I want you to discuss with someone else and agree on a written explanation.
So you can do this in pairs, but you do need to write your explanation down, and you both need to agree on it.
So I'll give you some time now, I'd let you to pause the video here and have a go at doing this activity.
Off you go.
Fantastic.
Well done.
So Laura and her partner say, "I disagree because there should be some carbon dioxide in our air.
Carbon dioxide is an important gas that is not usually harmful.
Plants need it to live, and it is in the air we breathe all the time.
It only becomes a problem when levels become high, and cause temperatures on earth to increase." Now, is your similar or different to that? So now we are on to the summary of our learning today.
And it says, carbon is a substance found in many different materials including graphite, diamonds, fossil fuels, carbon dioxide.
Carbon dioxide is produced when fossil fuels are burned.
Carbon dioxide is not necessarily dangerous, it's in the air we breathe, but it can cause problems as it builds up to high levels, and causes the temperatures on Earth to increase.
And we can see the dangers of greenhouse gases on climate change right now, especially with the ice caps melting, and polar bears finding it really difficult because the water levels are rising and that does affect us as well.
Now I am so proud of your fantastic work that you have done today.
Well done.
I'm really proud of all your critical thinking as well.