8th Grade Science Milestones Review

Which model shows the structure and movement of particles in a solid?

• model 1

• model 2

• model 3

• model 4

What step should the students take next in the investigation to increase the strength of the motor?

• Reduce the size of the axle running through the center of the motor.

• Increase the number of coils of wire within the two sections of the motor.

• Decrease the voltage of the power source being used to operate the motor.

• Place the permanent magnets and coils of wire farther apart inside the motor.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS2-3

In this setup, the thermometer is being heated by conduction and convection. How should the student change the setup to heat the thermometer by using only radiation?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Which of these shows the correctly completed diagram?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

The three jars show the movement of particles in three states of matter. Dry ice is solid carbon dioxide. As dry ice is heated, it goes directly from a solid to a gas through a process called sublimation. Which sequence of jars shows the change in the motion of particles of dry ice as it sublimes?

• jar P to jar Q

• jar P to jar R

• jar Q to jar R

• jar R to jar P

Tags

NGSS.MS-PS1-4

A student is investigating how a negatively charged rubber rod affects how charges are distributed on two stainless steel spheres that are touching each other. A diagram that shows two steps of the investigation is shown. Investigation of the Process of Induction Step 1 Place two stainless steel spheres, both on hard rubber stands, in contact with each other. Step 2 Bring a negatively charged rubber rod near sphere 1. Which diagram for step 2 correctly predicts the distribution of charges on the stainless steel spheres?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The graph shows the velocity of a moving train over time.

During which two intervals of time was the train moving with a constant, positive acceleration?

• 0–5 minutes and 10–15 minutes

• 5–10 minutes and 15–25 minutes

• 10–15 minutes and 25–30 minutes

• 15–20 minutes and 30–35 minutes

Tags

NGSS.MS-PS3-1

The diagram shows three types of electromagnetic radiation and their range of frequencies. Which explanation correctly uses the data in the diagram to show how infrared radiation and ultraviolet radiation are related in terms of energy?

• Ultraviolet radiation has less energy than infrared radiation because energy is inversely proportional to frequency and the frequency of ultraviolet radiation is higher.

• Ultraviolet radiation has more energy than infrared radiation because energy is inversely proportional to frequency and the frequency of ultraviolet radiation is lower.

• Ultraviolet radiation has less energy than infrared radiation because energy is proportional to frequency and the frequency of ultraviolet radiation is lower.

• Ultraviolet radiation has more energy than infrared radiation because energy is proportional to frequency and the frequency of ultraviolet radiation is higher.

Tags

NGSS.HS-PS4-1

A student is planning an investigation to explore different properties of matter. Which investigation will help the student explore a physical property of matter?

• Place a solid in a beaker and add a small amount of liquid. Observation: The beaker becomes warm to the touch.

• Add a small amount of solid to a liquid in a beaker. Observation: The solid dissolves in the liquid.

• Add a small amount of solid to a liquid in a beaker. Observation: The solution starts to fizz and overflows the container.

• Place a solid in a beaker and add a small amount of liquid. Observation: Bubbles form on the top of the solid.

A space agency tracked the path of an asteroid named 2011 MD, which passed within 12,300 kilometers of Earth’s surface. The path of the asteroid is projected onto the plane of the moon’s orbit around Earth in the diagram. Space scientists claimed that Earth’s strong gravitational field was responsible for the path of asteroid 2011 MD. Which argument BEST supports this claim?

• The velocity of the asteroid changed as evidenced by the changing direction of the asteroid.

• The velocity of the asteroid changed as evidenced by the straight line path after it passes Earth.

• The position of the asteroid bends slightly away from Earth as evidenced by the different locations relative to Earth.

• The position of the asteroid bends slightly toward the sun as evidenced by the different locations relative to the sun.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4