Earth's Support of Life

What is NOT essential for living things to survive?

• Food

• Water

• Shelter

• Transportation

What is the process plants on earth go through to make food using the sun's energy?

• Photosynthesis

• Glucose

• Interaction

• Greenhouse effect

During photosynthesis, plants convert carbon dioxide and water into oxygen and what else?

• water

• carbon dioxide

• oxygen

• glucose

What is the foundation for most food webs?

• Animals

• Plants

• People

• Food

How long does it take for Earth to rotate on its axis?

• 12 hours

• 365 days

• 24 hours

• 60 minutes

Why is the Earth rotating important?

• It allows all parts of the earth to receive sunlight throughout a day

• It holds our atmosphere in place

• It makes our days longer

• It makes our days shorter

What would happen if Earth was closer to the sun

• It would be much hotter

• It would be much colder

• It would always be daytime

• It would always be night time

What would happen if Earth was farther from the sun

• It would be much hotter

• It would be much colder

• It would always be daytime

• It would always be nighttime

What is unique about water on earth

• It tastes good

• It is frozen

• It is in liquid form on the surface

• It is only underground

In what states can water be found on earth?

• Gas

• Liquid

• Solid

• Jelloed