Milestones Review 1st Sem

Two objects at different temperatures are in contact. Which of the following happens to their thermal energy?

• Their thermal energies remain the same.
• Thermal energy passes from the cooler object to the warmer object
• Thermal energy passes from the warmer object to the cooler object.
• Thermal energy passes back and forth equally between the two objects.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-4

A large house being heated by heater warms a house when the air is circulating.

• Convection
• Conduction
• Radiation
• insulation.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

A type of friction that occurs when air pushes against a moving object causing it to decelerate.

• surface area
• air resistance
• velocity
• gravity 

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful

What does friction produce?

• light
• sound
• heat
• gravity

Tags

NGSS.HS-PS3-4

The rougher the surface, the faster an object will travel over the surface.

• True
• False

Why is the net force 0 in the image?

• Because the elephants are the same size
• Because they are both pulling the same amount of force in opposite directions
• Because they are elephants
• Because they are pulling away from each other.

Tags

NGSS.MS-PS2-1

the tendency of an object to resist a change in its motion

• acceleration
• inertia
• mass
• frame of reference

8 N to the left , and 4 N to the right. Find the net force. Is this balanced 

• 12 N Right  No
• 4 N Left  No
• 12 N Right  Yes
• 4 N Left  Yes

Tags

CCSS.7.NS.A.1A