Force STAAR Review

A student used their breath to inflate a balloon. When the base of the balloon is released by the student, air is released from the balloon. A diagram is shown. Which statement best describes the motion of the balloon as it is released?

• The balloon will move away from the ceiling because the air moves down.

• The balloon will not change position because it floats in the air.

• The balloon will move toward the ceiling because the air moves down.

• The balloon will move toward the ceiling because of gravity.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Students conduct experiments to investigate friction. Which experiment will best test the effect of friction on objects?

• Drop two balls from the same height at the same time

• Roll two marbles on the carpet from the same starting point at the same time and with the same amount of force

• Roll three marbles across three different surfaces from the same starting point at the same time and with the same amount of force

• Release two balls from the top of a ramp at the same time

A student conducts the investigation shown in the diagram. In this experiment a paper cup hangs from a string tied to a single uncooked spaghetti noodle. The student measures and records the mass of a penny. The student then adds pennies to the paper cup one at a time. Which question is the student most likely trying to answer with this investigation?

• How many spaghetti noodles will it take to hold up the mass of a penny?

• How much force will it take to break the spaghetti noodle?

• How long should the string that holds the paper cup be in order to support the greatest mass of pennies?

• How does the distance between the two chairs affect the amount of force it takes for the spaghetti noodle to break?

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. What should the student do to improve this experiment?

• Use blocks of equal mass on the four pieces of elastic

• Use blocks with enough mass to cause the four pieces of elastic to break

• Use more than four pieces of elastic and four blocks

• Use four pieces of elastic with different lengths but the same width

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS2-2

A student observes that the craters on the moon are different sizes. The student designs an experiment to study the formation of craters. The materials for the experiment are marbles and a pan of flour. The student makes a hypothesis that the size of the craters made on the surface of the flour will depend on the height from which the marble is dropped. Some of the steps in the student’s experiment are described below. Which of these is most likely Step 3 in the student’s experiment?

• Drop the same marble from different heights into the pan of flour

• Drop marbles of different masses from the same height into the pan of flour

• Drop marbles of different sizes from different heights into the pan of flour

• Drop a single marble one time into the pan of flour

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 other piece of equipment would be most useful for this experiment?

• A graduated cylinder to measure the volume of each sphere before the sphere is launched

• A beaker to collect the spheres after they are launched

• A stopwatch to measure how long it takes to load each sphere on the spring

• A meterstick to measure the height each sphere reaches after the sphere is launched

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When using a pulley and rope to lift a heavy box, you must pull with enough force to overcome the force of:

• magnetism

• gravity

• air friction

• electricity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A student was asked to compare the masses of four blocks that were all the same size but made of different materials. The student used a balance to compare the masses of two blocks at a time. The student repeated this process three more times with different pairs of blocks and recorded observations. Which list shows the blocks in order from least to greatest mass?

• Blocks N, M, L, P

• Blocks P, M, L, N

• Blocks N, L, M, P

• Blocks P, L, M, N

The science class conducts an experiment with swings of different length. Their results are below. What conclusion did they reach?

• Longer swings swing faster.

• Shorter swings swing faster.

• All swings swing the same.

• Heavier swings swing faster.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Fran measured the bounce height of the same ball and recorded her results in the chart below. What did Fran most likely change in the experiment?

• the height of each drop

• the color of the ball

• the mass of the ball

• the temperature of the ball

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1