Matter
Water on Earth
Human Activity & Earth's Resources
Stars & Shadows
Earth's Spheres
100

When matter changes shape

What do you call a physical change?

100

Most of the water of Earth.

What is salt water?

100

The main cause of environment problems are because of these.

What are humans?

100

The only star in our solar system.

What is the sun?

100

This sphere includes landforms.

What is the geosphere?

200

The tiny particles all matter is made up of.

What are atoms?

200

This sphere is all of the water on Earth.

What is the hydrosphere?

200

Energy made by the wind or the sun

What is reusable energy?

200

This determines if a bright light in the sky is a planet or a star.

What is the position in the sky?

200

This sphere includes all water on Earth.

What is the hydrosphere?

300

Burning firewood is an example of this type of change.

What is a chemical change?

300

Only 3% of Earth's water is this.

What is freshwater?

300

A problem that pumps carbon dioxide into the air and causes climate change.

What is burning fossil fuels?

300

Clumps of gas and dust are pulled together by this to form stars.

What is gravity?

300

Weather happens in this sphere.

What is the atmosphere?

400

Matter cannot be created and it also cannot be this.

What is destroyed?

400

Lakes, rivers, streams, and ponds are all this type of water...

What is fresh water?

400

Cutting down and burning forests removes trees that naturally absorb carbon dioxide, releasing stored carbon back into the atmosphere.

What is deforestation?

400

The angle of a light source creates this.

What is a shadow?

400

All living things are a part of this sphere.

What is the biosphere?

500

Atoms move freely, but are still connected in this type of matter.

What is a liquid?

500

Chemicals, fertilizers, and sewage

What are things that harm fresh water?

500

Using organic pesticides and clean energy

What are ways human can protect Earth's resources?

500

Gravity works to keep objects in orbit here.

Where is space?

500

These are the names of all 4 spheres.

What is the biosphere, atmosphere, geosphere, and hydrosphere?

M
e
n
u