Unit 3 Review

A student designs an experiment to test the force of a spring using a spring launcher and four spheres with the same diameter but with different masses. What question is being asked in this investigation?

• How does the mass of the ball affect the force needed?

• How does the diameter of the ball affect the force needed?

• How does the color of the ball affect the force needed?

• How does the height of launch affect the mass?

Tags

NGSS.MS-PS2-2

A student uses a spring scale to pull a 50-gram block horizontally across a wood desk. Then the student pulls the block the same distance across surfaces of carpet, sandpaper, and glass. What is a reasonable conclusion to this investigation?

• More mass will require more force to pull it.

• More mass will require less force to pull it.

• Smoother surfaces will decrease the amount of force needed.

• Rougher surfaces will decrease the amount of force needed.

Tags

NGSS.MS-PS2-2

A student designs an experiment to test the force of a spring using a spring launcher and four spheres with the same diameter but with different masses. What is a reasonable conclusion to this investigation?

• More mass will require more force to launch the ball.

• More mass will require less force to launch the ball.

• Less mass will require more force to launch the ball.

• The mass will have no effect on the amount of force needed to launch the ball.

Tags

NGSS.MS-PS2-2

A student designs an experiment to test the effect of the width of a piece of elastic on the elastic's ability to stretch. The student selects four pieces of elastic with different widths but the same length. The student then attaches blocks with different masses to the pieces of elastic. The results of the student's experiment are shown below. Why can't we find an answer to this investigation?

• There are 2 variables - elastic width and mass.

• The elastic is too narrow.

• The masses are too heavy.

• You can find an answer using this investigation.

Tags

NGSS.MS-PS2-2

Students drop the same heavy ball onto identical blocks of soft clay from different heights. For each height they measure the depth of the dent the ball makes in the clay. What will be different in all of the trials for this investigation?

• Height ball is dropped from

• The mass of the ball

• The type of clay used

• Everything will be the same

Tags

NGSS.MS-PS2-2

Students design an experiment to determine how much force is needed to move blocks of wood of different masses across a lab table. Which procedure should students include in their design?

• Conduct five trials, using a different scale to pull each block of wood

• Conduct five trials, pulling a different side of each block each time

• Conduct five trials, using a different table for each trial

• Conduct five trials, pulling each block of wood in the same way for each trial

Tags

NGSS.MS-PS2-2

Why is it harder for the boy in Image B to get down the hill?

• Motion

• Friction

• Work

• Displacement

How does the light behave differently when it enters the prism?

• The ray of light becomes shorter when it strikes the glass.

• The ray of light straightens as it strikes the glass.

• The ray of light bends as it strikes the glass.

• The ray of light transforms to heat when it strikes the glass.

Tags

NGSS.MS-PS4-2

When light strikes the surface of the mirror ball, it is--

• destroyed by the mirrors.

• absorbed by the mirrors.

• reflected by the mirrors.

• refracted by the mirrors.

Tags

NGSS.MS-PS4-2

Which of these best demonstrates the reflection of light?

• Looking through a glass door

• Looking at an image formed on a silver plate

• Looking at a lamp that is turned on

• Looking at a black cloth

Tags

NGSS.MS-PS4-2