Staar Review

A marble is given potential energy by being placed at Location W. When the marble is released, it rolls down the track. At which location does the marble have maximum kinetic energy?

• Location W

• Location X

• Location Y

• Location Z

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2. If the force of friction resisting the student's push is 4 N, what is the net force acting on the board?

• 4 N

• 6 N

• 10 N

• 14 N

Tags

NGSS.MS-PS2-2

The masses of four vehicles and the net forces acting on them as they enter a highway are recorded in the table. Which vehicle has the greatest acceleration as it enter the highway?

• sedan

• coupe

• SUV

• truck

Tags

NGSS.MS-PS2-2

During a demonstration of Newton's laws of motion, a student used the setup shown in Figure 1. The student flicked the index card with a fingertip, and the coin fell straight down into a plastic cup as shown in Figure 2. Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?

• The coin was at rest until the card was removed, so it tended to remain in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.

• Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.

• The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.

• The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following best describes energy transfer in a food web?

• Energy flows from the sun to producers and then to various consumers

• Energy is only transferred between animals

• Energy starts with consumers and then moves to producers

• Energy is recycled within the producers only

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck...

• can accelerate faster than the other two vehicles

• is traveling in the opposite direction from the other two vehicles

• is traveling on a curve in the road

• needs a large amount of force to move

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Four students were asked to classify the activities of the people in the picture below as examples of either potential or kinetic energy. Which student correctly classified the activities?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

A student kicks a soccer ball three times. Another student records the distance, the amount of time the ball travels, and the average speed in the table shown below. How many seconds did it take for the ball to travel 30 m during Kick 3?

• 0.5 s

• 1.0 s

• 1.5 s

• 2.0 s

Tags

NGSS.MS-PS3-1

The diagram below shows a hot air balloon rising. Propane gas tanks are seen at the bottom of the balloon. What energy transformations occur when the propane gas is used to lift the balloon?

• Mechanical----> Light----> Chemical

• Chemical----> Mechanical----> Thermal

• Thermal----> Chemical----> Light

• Chemical----> Thermal----> Mechanical

Tags

NGSS.MS-PS1-4

A hobbyist collected data about the motion of a toy train on a straight track and then recorded the data in the graph. Which of these accurately describes the motion of the toy train?

• The toy train speeds up while going forward and then slows down.

• The toy train slows down while going forward and then moves backward.

• The toy train moves forward at a constant speed, slows down, and then stops.

• The toy train moves forward at an increasing speed, stops, and then moves forward.

Tags

NGSS.MS-PS3-1