Act Practice - Science

1. According to Scientist 2, friction between the rocks and the clay is reduced by which of the following?

• A. Ice only

• B. Algae only

• C. Ice and mud only

• D. Mud and algae only

Tags

NGSS.MS-PS2-5

2. Suppose a researcher observed that wind speeds greater than 80 miles per hour are needed to move the rocks in the playa. This observation is consistent with which of the scientists’ explanations?

• F. Scientists 1 and 2 only

• G. Scientists 1 and 3 only

• H. Scientists 2 and 3 only

• J. Scientists 1, 2, and 3

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-5

NGSS.MS-PS2-5

3. Suppose that no seismic activity was recorded in the playa where the trails left by the rocks are found. This finding would weaken which of the scientists’ explanations?

• A. Scientist 1 only

• B. Scientist 3 only

• C. Scientist 1 and Scientist 2 only

• D. Scientist 2 and Scientist 3 only

Tags

NGSS.MS-ESS2-2

4. Suppose it were discovered that a particular rock formed a 200 m long trail in 72 hr. Would this discovery support Scientist 1’s explanation?

• F. Yes; Scientist 1 indicated the rocks can move several hundred meters in a few hours.

• G. Yes; Scientist 1 indicated the rocks can move several hundred meters in a few days.

• H. No; Scientist 1 indicated the rocks can move several hundred meters in a few hours.

• J. No; Scientist 1 indicated the rocks can move several hundred meters in a few days.

5. Suppose that during one year there was no measurable movement of any rocks in the playa during the spring. Scientists 1 and 2 would most likely both agree that this was due to the absence of which of the following factors?

• A. Algae

• B. Snowmelt

• C. Strong winds

• D. Subzero temperatures

Tags

NGSS.HS-ESS2-5

6. Suppose that air temperature in the playa varies between 4°C and 47°C. Would this information support the explanation of Scientist 2 ?

• F. Yes, because ice cannot form in that temperature range.

• G. Yes, because ice can form in that temperature range.

• H. No, because ice cannot form in that temperature range.

• J. No, because ice can form in that temperature range.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

7. Based on Scientist 1’s explanation, a rock trail that is 33 cm wide was most likely made by a rock with approximately what width?

• A. 10 cm

• B. 25 cm

• C. 50 cm

• D. 65 cm

8. If another trial had been performed in Experiment 2 and 450 mL of liquid had been measured in the cylinder, the temperature of the diet cola in this trial would most likely have been:

• F. less than 25°C.

• G. between 25°C and 45°C.

• H. between 45°C and 60°C.

• J. greater than 60°C.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Tags

NGSS.HS-PS1-5

• F. 1

• G. 4

• H. 5

• J. 8

Tags

NGSS.HS-PS1-7