Test Content

When the mass of the planet increases by a factor of 2, the force of gravity on an object at the planet’s surface (a)   by a factor of (b)   .

• increases

• decreases

• remains constant

• varies

Tags

NGSS.MS-PS2-4

Students are asked to design a cold pack. They mix different amounts of ammonium chloride (NH4Cl) with 100 milliliter (mL) samples of water at 30 degrees Celsius (°C) in small, sealable plastic bags. The results are shown in the table. Based on the data, approximately how much NH4Cl should be mixed with water to make a cold pack with the lowest temperature without using more NH4Cl than needed?

• between 20 and 30 g

• between 30 and 40 g

• between 40 and 50 g

• between 50 and 60 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The figures show a launcher that propels a marble horizontally toward a wooden block that is hanging at rest from a string (Time 1). When the marble collides with the block (Time 2), the marble stops and falls to the table while the block swings up to a certain height and then stops for an instant (Time 3). What two statements, when used together, make the best argument to support the claim that kinetic energy from the marble was transferred to the block?

• The marble fell to the table.

• The block swung upward from rest.

• The marble was propelled from the launcher.

• The marble stopped after colliding with the block.

• The block stopped after it reached a maximum height.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

A homeowner prepares for winter by insulating her house. The homeowner wants to buy insulation that retains the most thermal energy after the house has not been heated for three hours. Before installation, four different types of insulation were tested using a small-scale model of the house. The data collected from the tests are shown in the table. Based on the table, what material would be best for retaining the most thermal energy after three hours?

• Cellulose, because it has the highest final temperature.

• Fiberglass, because it has the lowest final temperature.

• Spray foam, because it provides the smallest temperature change.

• Mineral wool, because it provides the greatest temperature change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

When the roller coaster car is at (a)   , it has less potential energy than it has at Position 2.

Although the roller coaster car at Position 3 is decreasing in potential energy relative to Position 1, it has the same potential energy as it has at (b)   .

• Position 1

• Position 2

• Position 3

• Position 4
• Position 2
• Position 1

Tags

NGSS.MS-PS3-2

When the roller coaster car is at (a)   , it has less potential energy than it has at Position 2.

Although the roller coaster car at Position 3 is decreasing in potential energy relative to Position 1, it has the same potential energy as it has at (b)   .

• Position 1

• Position 2

• Position 3

• Position 4
• Position 2
• Position 1

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-2

A student wants to determine the relationship between the minimum force needed to move an object and an object’s mass. The student uses the design shown, which consists of a block, a spring scale, and a desk. Which of these variables must the student change in each trial to determine the relationship?

• the size of the block

• the mass of the block

• the distance the block moves

• the time that the force is applied to the block

Tags

NGSS.MS-PS2-2

Student A stands 300 meters (m) away from Student B. Student A can send a message to Student B in two ways: - Send sound waves (analog signals) through the air by yelling, as shown in Figure 1. - Send sound waves (analog signals) into a cell phone by talking. Those sound waves are changed into digital signals. Then the digital signals are received by Student B’s cell phone. Finally, the digital signals are changed back to sound waves, as shown in Figure 2. Based on the information, talking to Student B using a cell phone is more reliable than yelling, because the

• signal that is transmitted between the phones maintains its quality as it is transmitted.

• amplitude of the sound wave produced by Student A was smaller.

• cell phones rely on nearby towers to transmit the message.

• message will arrive sooner than when Student A yelled.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

In the performance task, what is the main goal of the Endless Energy engineering firm?

• To reduce energy consumption

• To increase energy production

• To develop renewable energy sources

• To improve energy efficiency

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-4

The simulation uses ______ to show the waves.

• colors

• arrows

• lines

• dots