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Earth Science Review

Authored by Charles Martinez

Science

8th - 9th Grade

NGSS covered

Earth Science Review
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The accepted value for the percent by mass of water in a hydrate is 36.0%. In a laboratory activity, a student determined the percent by mass of water in the hydrate to be 37.8%. What is the percent error for the student’s measured value?

5.0%

4.8%

1.8%

0.05%

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

B is more dense than A.

A is more dense than C.

B and C have equal densities

A and C have equal densities

Tags

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Under the same conditions of temperature and pressure, three different samples of the same uniform substance will have the same:

shape

density

mass

volume

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

7.1%

2.0%

7.7%

8.0%

Tags

NGSS.MS-PS1-2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A pebble has a mass of 35 grams and a volume of 14 cubic centimeters. What is its density?

0.4 g/cm3

2.5 g/cm3

490 g/cm3

4.0 g/cm3

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student observed a freshly dug hole in the ground and recorded statements about the sediments at the bottom of the hole. Which statement is an inference?

The hole is 2 meters deep.

Some of the particles are rounded.

The sediments were deposited by a stream.

Over 50% of the sediments are the size of sand grains or smaller.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

5.5 g

15.0 g

40.5 g

109.3 g

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