Life on Earth and Cycles Quiz

How long has life on Earth existed?

• Thousands of years

• Billions of years

• Millions of years

• Hundreds of years

What is the process called when water evaporates from the leaves of plants?

• Precipitation

• Condensation

• Respiration

• Transpiration

What happens to water vapor when it accumulates in the sky?

• It evaporates

• It condenses into clouds

• It disappears

• It turns into ice

Which of the following is NOT a store of carbon?

• In plants as biological molecules

• In the soil with microorganisms

• In the air as carbon dioxide

• In the sun as solar energy

What is the main process by which plants take in carbon dioxide?

• Respiration

• Condensation

• Photosynthesis

• Transpiration

What can happen to carbon in plants after they die?

• It can turn into water

• It can disappear

• It can become part of the sun

• It can be released as carbon dioxide by microorganisms

What are fossil fuels made from?

• Dead organisms in anaerobic conditions

• Sunlight

• Water vapor

• Living plants

What is the term for water falling back to Earth as rain?

• Transpiration

• Evaporation

• Condensation

• Precipitation

Which of the following is a part of the water cycle?

• Combustion

• Photosynthesis

• Transpiration

• Respiration

What happens to carbon when fossil fuels are burned?

• It turns into water

• It becomes part of the soil

• It disappears

• It is released as carbon dioxide