7th Grade Science Semester 2 Review

Velocity is

• speed and acceleration

• a frame of reference

• speed in a given direction

• constant speed

Evelyn needs to move a box across the floor. She applies a force of 50N to move the box 10m. Find the amount of work completed.

• 15 J

• 0.2 J

• 500 J

• 5J

Tags

NGSS.HS-PS3-2

With unbalanced forces, the object will move in the direction of the _______ force.

• larger

• smaller

• Equal

• balanced

Tags

NGSS.MS-PS2-2

The amount of energy used when a force moves an object a certain distance

• Work

• Joules

• Newtons

• Force

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Can be measured in meters per second (m/s)

• Acceleration

• Time

• Distance

• Speed

Tags

NGSS.MS-PS3-1

What is speed?

• how much distance is covered over a period of time

• the change in the location of a object

• how far you go

• how fast you accelerate

Tags

NGSS.MS-PS3-1

David is observing a car moving down the street. A change in the car's position over time is referred to as what?

• Velocity

• Force

• Speed

• Acceleration

Jackson is driving his car and notices that as he presses the accelerator, the car's speed increases over time. What is this change in speed over time called?

• Acceleration

• Velocity

• The distance traveled and the time it takes.

• Speed

Rohan is trying to push a heavy box across the floor. According to which of Newton's laws does the greater mass of the box require a greater force to accelerate it?

• Newton's 1st Law

• Acceleration

• Newton's 2nd Law

• Force

Arjun is trying to measure the force he needs to push a box across the floor. What unit should he use to express this force?

• Weight

• gram

• Newton

• Mass