ActiveActive Reading Reading

Engage Your Brain

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Essential Question

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Lesson Vocabulary1 Preview the lesson.2 Write the 6 vocabulary terms here.

Find the answer to the question in the lesson.

What changed the shape of these rocks over time?

What Changes Earth?

SC.1.E.6.3 Recognize that some things in the world around us happen fast and some happen slowly.

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Make It FastEarth is always changing. Some

changes are fast. They happen in minutes, hours, or days.

An earthquake is a fast change. An earthquake is a shaking of Earth’s surface. Floods and eruptions from volcanoes are fast changes too. A volcano is a place where hot melted rock comes out of the ground.

earthquake

Active ReadingActive ReadingAn effect tells what happens. Draw two lines under an effect.

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volcano erupting

A flood happens when streams, rivers, or lakes get too full.

flood

Circle the labels that name fast changes.(in

set)

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Take It SlowSome changes to Earth are slow.

Slow changes happen over many months or years. Weathering is a slow change. Weathering happens when wind and water break down rock into smaller pieces. Erosion is also a slow change. Erosion happens when wind and water move rocks and soil. It changes the shape of land.

Erosion wears away the cliff.

Active ReadingActive ReadingDraw one line under a detail. Draw an arrow to the main idea it tells about.

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A drought is another slow change. A drought is a long time with very little rain. The land gets very dry.

drought

Weathering and erosion have worn down these rocks.

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Can a droughtlast for minutes or for years?

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Make a MatchLook at the Before and After pictures.

Make three matches.

Write the number of a Before picture on the After picture that matches.

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weathering

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Trees dry out.Trees are burned.

Land is covered with water.Land gets dry.

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Sum It Up

2 Draw It!

Draw two changes to Earth. Label eachfast or slow.

1 Circle It!

Look at each picture. Then circle the effect.

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Vocabulary Review

Brain CheckName

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earthquake flood drought volcano erosion

LESSON 4

Fill in the puzzle. Use these words. Use the pictures to help.

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Take It Home

Family Members: With your child, research and discuss ways to stay safe in an earthquake or flood.

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Think about each change. Circle the time you think it may take to happen.

Kind of Change Time It May Take

earthquakefew minutes

many years

weatheringfew minutes

many years

floodfew hours or days

many years

erosionfew hours or days

many years

Apply Concepts

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