Unit 4 Review

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

An object may move when a _______ is applied to it. 

• force
• gravity
• friction

Tags

NGSS.MS-PS2-2

A barefoot student steps on a hot concrete surface. Most of the heat transferred to the student’s skin by this contact is by the process of—

• convection
• conduction
• vaporization
• radiation

How does air travel?

• they don't travel
• hot to cold
• cold to hot
• All of the above

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Temperature always measures the ___________ movement of molecules

• median

• mode

• total

• average

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

NGSS.MS-PS1-4

Energy is the ability to do __________

• bonds

• work

• atoms

• molecules

Tags

NGSS.MS-PS3-5

How much KE does a moving 6 kilogram object have if it moves with a velocity of 3 m/s?

• 27 J
• 18 J
• 9 J
• 2 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-1

A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters. What is the mechanical advantage of the lever?

• 1

• 2.5

• 5

• 10

The law of conservation of energy states that when one form of energy is converted into another,

• energy is destroyed in the process
• no energy is destroyed in the process
• energy is created in the process
• some amount of energy cannot be accounted for

Tags

NGSS.HS-PS3-3

An object has a weight of 200 N and is moved 3 meters.  How much work is done?

• 66.7 J
• 600 J
• 203 J
• 0.015 J