5.P.1.1

A child rides a wagon down a hill. Eventually, the wagon comes to a stop. Which is most responsible for causing the wagon to stop?

• gravity acting on the wagon
• the mass of the wagon
• friction acting on the wagon
• the mass of the child

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Which best describes the force of gravity?

• a pushing force
• a pulling force
• a change in mass
• a change in speed

Tags

NGSS.MS-PS2-4

The gravitational force of the Sun is strong enough to hold all the planets of our solar system in orbit many millions of miles away. Which best describes why objects having far less mass on the surface of these planets are not pulled off and into the Sun?

• The objects have too little mass to be affected by the Sun.
• The objects have more mass on the planets than on the Sun.
• The objects are held by the greater combined gravity of all the planets.
• The objects are more strongly affected by the gravity of the planet on which they are found.

Tags

NGSS.MS-PS2-4

Which is the best explanation of why the Moon revolves around Earth?

• The Moon has a thinner atmosphere than Earth.
• The Moon is too large to move away from Earth.
• The Moon is attracted by the gravity of Earth.
• The Moon has a smaller gravitational force than Earth

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Which is the best example of a pushing force that reduces the speed of an object?

• a bat hitting a baseball
• a brake rubbing against a wheel
• a pedal turning the wheels of a bicycle
• a skateboard wheel rolling against pavement

Tags

NGSS.MS-PS2-2

A pencil falls off of a desk. What moves the pencil toward the floor? 

• mass
• friction
• gravity
• speed

Tags

NGSS.3-PS2-1

NGSS.5-PS2-1

Four different students take turns pushing a large, heavy ball on the school parking lot. What is the best way to determine which student used the most force to push the ball?

• compare the sizes of the students
• compare the ages of the students
• compare the distances that the ball rolled
• compare the number of times the ball was rolled

Tags

NGSS.MS-PS2-2

A student uses a toy car and ramp to investigate how surface affects the speed of a rolling object. What should the student intentionally change when doing this experiment?

• The color of the toy car

• The distance the toy car travels

• The material on which the toy car rolls

• The weight of the toy car

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

NGSS.3-5-ETS1-3

The tendency of an object to stay in motion or at rest until a force acts upon it is

• inertia

• gravity

• speed

• frame of reference

Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion? 

• ball with a mass of 5 kg 
• ball with a mass of 10 kg 
• ball with a mass of 15 kg 
• ball with a mass of 20 kg

Tags

NGSS.MS-PS2-2