Atmosphere
The Earth was molten for thousands of years. True or False?
False
What do plants use carbon dioxide for?
to produce food(glucose, a sugar)
What is the reaction for Calcium Carbonate?
calcium oxide + carbon dioxide
How can we reduce global warming?
By using renewable sources.
Are bioplastics better than plastics?
Yes
There was little to no oxygen in Earth's early atmosphere. True or False?
True
What is the chemical reaction for photosynthesis?
carbon dioxide + water -> glucose + oxygen
Name 3 atmospheric changes.
A container ship burning diesel, Brick factories producing waste gases from fossil fuel and Cars burning petrol.
How many times do tides make water rise and fall in a day?
2 times a day
What makes plastics bad?
They don't break down easily.
About how many years ago did the Earth form?
4600 million years ago
How many years ago did many organisms with shells evolve?
around 600 to 400 million years ago.
Without the greenhouse effect, what would the Earth be?
much colder
State 2 types of renewable resources.
Wind/Tidal/Solar
What happens when plastic is thrown away?
Plastic waste harms wildlife as plastic doesn't break down easily.
What formed when the earth cooled?
A solid crust
What do some organisms turn into when they die?
fossil fuels such as oil and coal.
How does deforestation affect the climate?
Fewer trees cause less of the carbon dioxide to be used up, so the level in the atmosphere increases
What has created holes in the atmosphere and what to the earth?
The carbon dioxide in the air has created holes in the atmosphere and increased Earth's temperature.
Give 2 examples of what bioplastics are made of
vegetable oils/sawdust/food waste
How were the first lakes and oceans formed? Explain the process.
Water vapour was produced by the volcanoes, and as the Earth cooled, it condensed into liquid water. The water fell as rain forming the first lakes and oceans.
200 million years ago, why was there very little carbon dioxide?
Most of the carbon had been used to make the chemicals, which are part of all living things.
How does air pollution affect the climate?
The levels of carbon dioxide, methane and water vapour increase, the amount of heat escaping decreases, and so the Earth's climte becomes warmer.
What did people use windmills for before and what do they use wind turbines for now?
Before: grind wheat into flour and pump water
Now: generate electricity
What are conventional plastics made of?
Petroleum