4th Grade Force and Motion

What is the measurement of the force of gravity on an object

• acceleration

• mass

• weight

• gravity

Tags

NGSS.MS-PS2-2

Which force resists motion between objects that are in contact

• friction

• mass

• speed

• velocity

After studying acceleration, Amos explains what the gas pedal in the car is called an accelerator. What should Amos say in his explanation

• An accelerator increases friction

• An accelerator causes a change in the car’s velocity

• An accelerator balance the effect of gravitational forces

• An accelerator is used to keep the velocity the same

Tags

NGSS.MS-PS2-2

What can cause acceleration

• Force

• Inertia

• Speed

• Weight

Tags

NGSS.MS-PS2-2

Henri wants to explain what is meant by mass. How should he describe the mass of his body

• The weight of his body in newtons

• The weight of his body in pounds

• The volume occupied by his body

• The amount of matter in his body

What two things must Stephanie measure to find the speed of a moving object

• Mass and inertia

• Distance and time

• Gravity and Friction

• Position and Motion

Tags

NGSS.MS-PS3-1

What force causes a boy jumping off a chair to move toward the Earth

• Buoyant

• Electrical

• Gravitational

• Magnetic

Tags

NGSS.MS-PS2-4

Any moving abject will keep moving in the same direction at the same speed unless some force changes its direction or speed

• Law # 1

• Law # 2

• Law # 3

• Law # 4

Tags

NGSS.MS-PS2-2

For any action there is an equal and opposite reaction

• Law # 1

• Law # 2

• Law # 3

• Law # 4

Tags

NGSS.MS-PS2-1

Any object speeds up or slows down in proportion to the size of the force acting on it

• Law # 1

• Law # 2

• Law # 3

• Law # 4

Tags

NGSS.MS-PS2-2