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Time Detectives at Lava Flat Camp

Join a camping class investigation to compare quick land changes with slow rock wear using study cards and picture records.

Grade 2ScienceInteractive · Printable

Aligned to2-ESS1-1

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What’s included

Single worksheet
Auto-graded online
1 NGSS standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 2
Subject: Science
Question types: Fill in the blank, Multiple choice, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

Students use time clues to classify Earth changes as quick or very slow.
Students compare records and judge what they show about the time a land change takes.
Students support a claim about different speeds of Earth changes using two records.

How to use

Read the investigation aloud and mark the time clues together. Let students answer using the records, then discuss the limits of photographs and models.

Curriculum

NGSS standard covered

2-ESS1-1

Use information to show that some Earth events happen quickly and others happen very slowly.

Preview

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Name Date

Time Detectives at Lava Flat Camp

Investigate time clues in records of changing land.

Investigate the Study Cards

Read the class investigation. Use the records to answer. Choose one answer for each multiple-choice question.

The Camping Class Investigates

During a camping trip, Imani's class visits Lava Flat Camp. The campground is on old, cool volcanic rock. A ranger gives the class sample study records about changing volcanic land. The class stays in the safe camping area.

Step 1: Ask, "Do these land changes take about the same amount of time?" Step 2: Read the dated pictures, timed videos, and study notes. Step 3: Compare picture pairs with different time gaps. Within each pair, keep the place, view, and picture size the same. Step 4: Record the time clues and the land changes.

Crack card: During an earthquake, a crack opened in the ground. A video recorded the change from start to finish in 20 seconds.

Lava card: Hot, flowing rock spread over a patch of ground in 7 hours.

Rock card: Pictures taken 80 years apart showed that rain had loosened small grains from a rough rock surface.

Stream card: A study estimated that a stream took about 600 years to wear a deep groove into rock.

Which recorded change took the shortest time?