Studies Weekly G5 WK18 Biosphere

What is the biosphere made up of?

• The parts of Earth where life does not exist

• The parts of Earth where life exists

• Only the deepest ocean trenches and highest mountaintops

• Only human-inhabited areas

The biosphere consists of (a)   .

• Only plants and animals
• Humans, plants, animals, and microo
• Just microorganisms
• Only freshwater and marine life

How old do scientists estimate the biosphere to be?

• About 1 million years old

• About 3.5 billion years old

• About 3.5 million years old

• About 10 million years old

How many regions called biomes is the biosphere divided into?

• Five

• Six

• Seven

• Eight

Which of the following is NOT classified as a biome?

• Forest

• Grassland

• City

• Tundra

What are the seven biomes classified under the biosphere?

• Forest, grassland, freshwater, marine, desert, mountain, and tundra

• Forest, grassland, saltwater, marine, desert, mountain, and tundra

• Forest, savanna, freshwater, marine, desert, mountain, and tundra

• Forest, grassland, freshwater, oceanic, desert, mountain, and tundra

What is a biome?

• A large area of the Earth characterized by its climate and the plants and animals that live there.

• A small region with uniform weather patterns.

• A community of people living in a particular area.

• A scientific instrument used to measure biodiversity.

Why are biomes found in bands above or below the Equator?

• Because of the Earth's rotation on its axis.

• Because of the uniform distribution of sunlight.

• Because temperature and precipitation patterns are affected by the flow of air currents in the atmosphere and ocean currents in the hydrosphere.

• Because of the artificial boundaries set by humans.

Tags

NGSS.MS-ESS2-6

Forests cover about what percentage of the Earth?

• 10 percent

• 20 percent

• 30 percent

• 40 percent

What do grassland biomes need to exist?

• Cold climates and lots of snow.

• Grass and warm climates so the grass can grow.

• High levels of rainfall and shade.

• Sandy soils and very little water.