5.7B Science - Investigations on Force

A student wants to investigate how the force with which a ball is thrown affects how high of a splash it makes in a pool. Which table BEST represents how the investigation should be set up?

• Independent variable: Type of ball; Dependent variable: Weight of the ball; Controlled variables: Height of the splash, Force the ball is thrown with, Height the ball is thrown from

• Independent variable: Height of the splash; Dependent variable: Force the ball is thrown with; Controlled variables: Weight of the ball, Type of ball, Height the ball is thrown from

• Independent variable: Weight of the ball; Dependent variable: Type of ball; Controlled variables: Height of the splash, Force the ball is thrown with, Height the ball is thrown from

• Independent variable: Force the ball is thrown with; Dependent variable: Height of the splash; Controlled variables: Weight of the ball, Type of ball, Height the ball is thrown from

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

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

Tags

NGSS.MS-PS2-2

Students investigate force. The masses they use begin at rest on the ramp. The setup the students use is shown. Which change will reduce the amount of force needed to move the masses?

• Decrease the height of the ramp

• Increase the height of the ramp

• Add an additional mass

• Pull the spring scale with two hands

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

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

NGSS.MS-ETS1-1

Which statement correctly describes the forces that affect the student's position and motion?

• The force of gravity causes the student to speed up from Position A to Position B.

• The force of gravity causes the student to speed up from Position B to Position C.

• The force of the student’s legs moving causes the motion to stop at Position B.

• The force of the student pulling on the swing causes the motion to stop at Position A.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

NGSS.MS-PS2-4

Which statement best describes the motion of the car when the straw is released?

• The car will move away from the wall in the same direction as the air that is leaving the balloon.

• The car will move toward the wall because of the force of the air from the straw.

• The car will move fast because the straw gets light as the air is released.

• The car will not move because the air escapes from the balloon.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What force causes the wagon to stop?

• The force of gravity which is acting in the same direction as the arrow

• The force of friction which is acting in the same direction as the arrow

• The force of gravity which is acting in the opposite direction of the arrow

• The force of friction which is acting in the opposite direction of the arrow

Tags

NGSS.MS-PS2-2

Which actions will make moving the cart in one direction easiest for the students?

• Student 1 pulls the cart to the left while Student 2 pulls the cart to the right.

• Student 1 pulls the cart to the left while Student 2 pushes the cart to the left.

• Student 1 pushes the cart to the right while Student 2 pushes the cart downward.

• Student 1 pushes the cart to the right while Student 2 pulls the cart upward.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Which experiment would best demonstrate the effect of surface area on friction?

• Roll a marble on a smooth surface and a rough surface and compare the distances traveled

• Push a toy car on a flat surface and an inclined surface and measure the speed

• Drop a feather and a stone from the same height and observe their fall

• Slide a large book and a small book down a ramp and measure the time taken to reach the bottom

What change would most likely increase the speed of a toy car rolling down a ramp?

• Reduce the mass of the toy car

• Decrease the angle of the ramp

• Increase the mass of the toy car

• Use a rougher surface on the ramp

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5