Earth Science Revision quiz

The atmosphere is a mixture of gases and is made up of

• 78% oxygen, 21% carbon dioxide and 1% water vapour

• 78% carbon dioxide, 21% oxygen and 1% other gases

• 78% nitrogen, 21% oxygen and 1% carbon dioxide

• 78% nitrogen, 21% oxygen and 1% other gases

It is thought that human activity has affected the carbon cycle by increasing the amount of carbon dioxide in the atmosphere. Which of the following would have contributed to this

• The use of aerosol cans

• The use of beef and dairy cattle

• The use of nuclear energy

• The use of fossil fuels

Which of the following processes would decrease the amount of carbon dioxide in the atmosphere

• respiration of animals and plants

• photosynthesis in plants

• animals eating plants

• dead plants and animals decaying

How is carbon passed on from one organism to another?

• They breathe the same air

• One organism does photosynthesis and the other does respiration

• Plants absorb carbon from dead organisms into their roots

• Through one organism eating another

How does the process of cellular respiration contribute to the carbon cycle.

• During respiration, all organisms take carbon in the form of carbon dioxide from the atmosphere.

• During respiration, plants use carbon from the atmosphere to make glucose (C₆H₁₂O₆).

• During respiration, all organisms release carbon in the form of carbon dioxide to the atmosphere.

• During cellular respiration, carbon in the bodies of organism may be turned into fossil fuels.

As water vapour rises in the atmosphere it cools and forms many tiny water droplets. This process is called

• cooling

• transpiration

• evaporation

• condensation

The lithosphere is

• all the rocks of the Earth

• all the magma and lava of the Earth

• the rocky layer of the Earth consisting of the crust and upper mantle

• The whole of Earth except for the atmosphere and hydrosphere

All the living things currently alive on Earth are found in the...

• environment

• biosphere

• green layer

• ecosphere

Many substances on Earth are involved in a cycle e.g the water cycle, the carbon cycle, the nitrogen cycle and the phosphorus cycle. Why is this important?

• So that humans will not waste these substances

• So that these substances can be found all over the world

• So that these substances will not run out but are constantly being recycled

• So that the plants won't use them all up and there won't be enough for the animals as well

Earth is one giant system with four interconnected spheres. Which of the following is not one of the 4 interconnected spheres on planet Earth?

• biosphere

• atmosphere

• hydrosphere

• ionosphere