Which of the following investigations tests the effect of gravity on an object?

• Pulling a wagon through a grassy field

• Rubbing two balloons together

• Dropping a ball from different heights

• Attracting iron filings with a magnet

Tags

NGSS.5-PS2-1

Which type of is represented in the picture?

• a pulling force

• an electrical force

• a pushing force

• a magnetic force

Tags

NGSS.3-PS2-1

Students play with two small, toy plastic dogs with a strip attached to the bottom of them. When placed close together, the dogs will either move quickly towards each other and stick together or will push away from each other. These toys move because of the force of —

• gravity

• friction

• magnetism

• all of the above

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

NGSS.3-PS2-3

Which of the following actions requires a push?

• Playing tug-of-war

• Picking a carrot

• Opening a dresser drawer

• Pedaling a bicycle

Tags

NGSS.3-PS2-1

What force enables the numbers and symbols to attach to the board?

• Gravity

• Friction

• Magnetism

• Air Pressure

Tags

NGSS.3-PS2-3

Students conduct an investigation by rolling a car down a ramp covered with four different surfaces, while measuring the time it takes for the car to travel from the top of the ramp to the bottom of the ramp. The results are shown in the graph.

Which surface causes the LEAST amount of friction?

• Surface W

• Surface X

• Surface Y

• Surface Z

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Students spin a rubber ball and a tennis ball in a bowl of water to see which ball spins longer. The results are measured in —

• hours

• minutes

• meters

• liters

Students record the amount of time it takes for a rock to hit the ground after being dropped. They repeat this investigation several times. Why is it important to repeat an investigation?

• Repeating an investigation increases the reliability of results.

• Repeating an investigation allows time for students to test many types of rocks.

• Repeating an investigation is not necessary because students should record the first answer they obtain to reduce errors in results.

• All of the above

Tags

NGSS.3-5-ETS1-3

A pencil falls to the ground when it is dropped. Which force acts upon the pencil, causing it to fall?

• Friction

• Motion

• Magnetism

• Gravity

Tags

NGSS.3-PS2-1

NGSS.5-PS2-1

Based on the notebook entry below, which investigation to explore force is likely to have been tested?

• Pulling a rope

• Pushing against a wall

• Partners pushing their hands against each other

• Throwing a ball against the wall

Tags

NGSS.3-PS2-1