6th Grade Science - Unit Test

What are the four main subsystems of Earth?

• The hydrosphere, geosphere, atmosphere, and biosphere.
• The sun, moon, stars, and planets.
• The continents, oceans, mountains, and valleys.
• The plants, animals, rocks, and water.

What is the biosphere?

• All the water on Earth.
• The air that surrounds Earth.
• The Earth's rocky parts.
• All the living things on Earth.

What is one way humans can affect Earth's systems?

• By planting trees.
• By building houses.
• By cleaning up pollution.
• By polluting the air and water.

What is the geosphere made of?

• All the living things on Earth.
• The air that surrounds Earth.
• The Earth's rocks and molten core.
• All the water on Earth.

What is one example of a natural event that can change Earth's systems?

• Building a house.
• Planting a tree.
• Volcanic eruptions.
• Cleaning up pollution.

What is one way scientists study Earth's systems?

• They use telescopes to look at the stars.
• They use microscopes to look at tiny organisms.
• They use models to help them understand complex systems.
• They use computers to play games.

What is the main source of energy that drives Earth's processes?

• The Earth's core.
• The moon.
• The Sun.
• The wind.

Why are Earth's systems important to all living things?

• They provide us with food, water, and air.
• They make the Earth look beautiful.
• They help us learn about science.
• They make it possible to travel around the world.

The part of the Earth where living organisms exist, including land, water, and air

• Biosphere
• Geosphere
• Hydrosphere
• Atmosphere

All water on Earth's surface, including oceans, lakes, rivers, and groundwater

• Biosphere
• Geosphere
• Hydrosphere
• Atmosphere