End of Year Review: Force/ Motion and Heat Transfer

A push or a pull.

• work

• force

• motion

• energy

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Two girls are pulling on opposite ends of a thick rope. Both girls pull on the rope with the same force but in opposite directions. If both girls continue to pull with the same force, what will most likely happen? 

• One girl will pull the other toward her.
• Both girls will stay in the same place. 
• Gravity will cause the rope to sag. 
• The rope will break.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

When a bird flies, its wings push air downward. As a result the air pushes back upward on the bird. Which law of motion most applies to the way the wings of a bird beat? 

• Every action has an equal and opposite reaction
• The rate of acceleration of an object depends on the amount of force applied.
• Objects in motion tend to remain in motion until acted upon by an another force. 
• Force is defined by mass times acceleration

A student walking quickly while carrying an orange on his lunch tray stops suddenly. The orange will most likely roll off the tray due to

• inertia of the orange. 
• centripetal force of the orange
• the friction acting on the orange.
• the balanced forces acting on the orange.

 Alesia is taking an all­ day ride on her bicycle. The graph shows how far she is from home at different times during her ride.  During which time period is Alesia moving fastest?

• 0–1 hours 
• 3–4 hours 
• 4–5 hours
• 6–7 hours 

Tags

NGSS.MS-PS3-1

A student reads his paper on friction to the class. Which statement should he include in his paper if he wants to present accurate information? 

• Friction increases mechanical advantage
• Friction opposes the direction of movement. 
• Friction makes movement of an object easier.
• Friction reduces the amount of work used to move an object. 

 If an unbalanced force acts on a stationary object, the object will:.

• remain stationary
• move away from the force
• accelerate in the direction of the force
• accelerate in the opposite direction of the force

Tags

NGSS.MS-PS2-2

The force that attracts an object or mass towards the center of the Earth or towards any other physical object having mass

• Force

• Position

• Friction

• Gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What type of forces can change the position, direction, or speed of an object?

• Banana forceps
• Balanced forces
• Umbrella forces
• Unbalanced forces

What type of forces cancel each other out and do not cause motion to occur?

• Balanced forces
• Jedi forces
• Unbalanced forces
• Balanced porches