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100

What is an earthquake? 

An earthquake is a shaking of Earth's surface.

100

What is a volcano?

A volcano is a place where the hot melted rock comes out of the ground. 
100

What is the flood?

A flood happens when streams, rivers, or lakes overflow. 

100

What does weathering happen? 

Weathering happens when wind and water break down rock into smaller pieces. 

100

what is a drought? 

A drought is a long time with very little rain. 

200

what does erosion happen? 

Erosion happens when wind and water move rocks and soil. 

200

How long do fast changes happen? 

They happen in minutes, hours, weeks or days.

200

What are three fast changes that happen on Earth?

earthquake, volcanic eruption, flood

200

where does hot, melted rock come out of the ground? 

A volcano

200
How long do slow changes happen?
They happen over many months or years. 
300

Which fast change is caused by water? 

A flood

300

What kinds of slow changes may be caused by water? 

weathering and erosion

300

What living things can help stop erosion? 

Trees and other plants

300

How do branches and leaves help stop erosion? 

They stop the wind from blowing soil away. 

300

How do roots help stop erosion? 

They grow into the soil and stop water from washing soil away. 

400

How are weathering and erosion the same? 

Both are slow changes

400

What do people use water? 

To wash, bathe, cook, drink, and clean

400

How are a flood and a volcanic eruption the same? 

Both are fast changes. 

400

Why do you think these fast changes might be dangerous? 

They cover the land with water or hot rock or shake Earth quickly. 

400

What natural resources can you use? 

water, air, plants, animals, rocks...

500

How are weathering and erosion different? 

weathering breaks down rocks, and erosion moves them.

500

What can people use animals and plants? 

People use animals for food and clothing.

People use plants for food and to make and build things. 

500

How are a flood and a volcanic eruption different? 

A volcanic eruption is a flow of melted rock, and a flood is a rush of water that overflows rivers or other bodies of water. 

500

What is the difference between a natural resource and a product? 

A natural resource is something found in nature. A product is something made by people or machines. Natural resources can be made into products. 

500

How are animals and plants different from the other natural resources? 

Animals and plants are living things.