Force, Motion and Energy

Optical fibers are used for long-distance communications. They transmit data from one place to another. An optical fiber is made of an extremely thin glass strand. Light enters one end of the fiber and moves through the fiber as shown. After light leaves the fiber, the light will travel -

• back in the way it exited

• in a straight line

• along the outside of the fiber

• in a circle

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Students designed an investigation to determine how far a ball would travel when released at the top of two ramps of different heights. They set up the investigation shown. What should the lab team do to improve their investigation?

• Use Ball A on both ramps

• Use Ramp 2 for both balls

• Use Ramp 1 for both balls

• Place Ball B on Ramp 1 and Ball A on Ramp 2

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

A spring scale is a tool that measures the strength of force needed to move an object. The force is measured in Newtons (N). A student sets up two spring scales pulling wooden boxes of different masses across a table. Which question is the investigation most likely designed to answer?

• How does mass affect the force needed to move an object?

• How does the surface affect the force needed to move an object?

• How do wooden blocks affect spring scales?

• How does the mass of one block affect the mass of another block?

Tags

NGSS.MS-PS2-2

A student designed an investigation to determine the effect of a sphere's mass on the height it will reach when launched from a spring launcher. The student selects four spheres with different volumes and masses. The student launched each sphere and measured the top height each sphere reached.

What should the student do to improve this investigation?

• Use four different spring launchers

• Use four spheres with different masses but the same volume

• Use two additional spheres in order to gather more data

• Use spheres with different volumes but the same mass

Tags

NGSS.MS-PS2-2

A force that attracts two objects toward each other is called ____.

• gravity

• friction

• push

• mass

Tags

NGSS.MS-PS2-4

Why does a ball fall to the ground after it is thrown through the air?

• friction

• light energy

• air pressure

• gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A teacher drops a tennis ball and golf ball at the same height to see if they will land at different times. What force causes the tennis ball and the golf ball to land on the ground?

• magnetism

• air pressure

• gravity

• friction

Tags

NGSS.MS-PS2-4

A student designs an experiment to test the force of a catapult using four cubes with the same volume, but with different masses. What other scientific equipment would the student most likely use for this experiment?

• A metric ruler to measure the distance each cube travels after being launched.

• A stop watch to see how much time it takes to load each cube on the catapult.

• A beaker to measure the volume of each cube.

• A triple beam balance to measure the mass of each cube.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What should the student do to move the wagon farther away from himself?

• Push on the handle of the wagon

• Pull on the handle of the wagon

• Sit on top of the wagon

• Lift the wagon

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Four students are moving a table as shown by the rectangle below. Each number represents a student. Student 3 and 4 are pulling, and student 1 and 2 are pushing. Which direction will the table move?

• Northeast

• Southeast

• Southwest

• Northwest

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2