Essential Question What Changes Earth? Earth is always changing. Some changes are fast. They happen

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Text of Essential Question What Changes Earth? Earth is always changing. Some changes are fast. They happen

  • ActiveActive Reading Reading

    Engage Your Brain

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    Essential Question

    (b kg

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    K ev

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    y LESSON 4

    Lesson Vocabulary 1 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 Fast Earth 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 Reading An 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.(inse

    t) ©

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    M or

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    Take It Slow Some 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 Reading Draw 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 drought last for minutes or for years?

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  • 1 2

    3

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    Make a Match Look at the Before and After pictures.

    Make three matches.

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

    Mount Saint Helens

    Before

    wall arch land (b

    ) © D

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    tr ) ©

    A tla

    nt id

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    C or

    bi s

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    weathering

    flood

    volcano

    After (b

    ) © S

    ar ah

    Q ui

    ll /

    A la

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    / A

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    y

    (b ) ©

    D en

    ni s

    H al

    lin an

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    C om

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    ; ( tr

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    tla nt

    id e

    P ho

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    C or

    bi s

    1_CFLESE793560_U04L04LS.indd 173 05/03/18 4:11 PM

  • 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 each fast or slow.

    1 Circle It! Look at each picture. Then circle the effect.

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  • Vocabulary Review

    Brain Check Name

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    (tl ) ©

    P at

    ric k

    P le

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    or bi

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    l) ©

    Je ff

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    A la

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    M ic

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    S . Y

    am as

    hi ta

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    bi s;

    (b r)

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    earthquake flood drought volcano erosion

    LESSON 4

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

    Across

    Down

    4

    1

    5

    2

    3

    1

    2

    3

    4 5

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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

    earthquake few minutes

    many years

    weathering few minutes

    many years

    flood few hours or days

    many years

    erosion few hours or days

    many years

    Apply Concepts

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