Science 8 MT Review

How can you tell if an object is in motion?

• The object will look different.

• I'll be able to see the forces.

• It will remain in the same position.

• Its position will change in relation to other objects.

Which of Newton's Laws is demonstrated by a ball rolling to a wall then stopping?

• Law of Inertia

• Law of Acceleration

• Law of Interaction

• Law of Action and Reaction

Which of Newton's Laws describes the amount of force applied to accelerate an object's mass?

• Law of Inertia

• Law of Acceleration

• Law of Interaction

• Law of Action and Reaction

What is inertia?

• The mass of an object.

• Another name for unbalanced forces.

• The opposing force of gravity.

• The tendency of an object to continue doing what it is currently doing.

Why do you lean towards the left when a car turns right?

• Because of inertia

• Because of gravity

• Because of buoyancy

• Because of velocity

For an action force, there must be a reaction force that

• Always acts in the same direction

• Is slightly smaller in magnitude than the action force

• Is slightly larger in amplitude than the action force

• Is exactly equal in magnitude

An archer shoots an arrow. Consider the action force to be the bowstring against the arrow. The reaction to this force is the

• Combined weight of the arrow and bowstring

• Friction of the ground against the archer's feet

• Grip of the archer's hand on the bow

• Arrow's push against the bowstring

Why is it harder to push a van filled with bowling balls than it is to push van filled with basketballs?

• The mass of the car is greater than the mass of the basketball.

• The mass of the bowling balls is greater than the mass of the basketballs

• The van with the basketballs is bigger than the van with the bowling balls.

• It should be equally as hard to push the two vans

Which of the following sentences uses work in the scientific sense?

• Stan goes to work on the bus.

• Anne did work on the project for 5 hours.

• Joseph found that holding the banner in place was hard work.

• An engine does work on a car when the car is moving.

If Elio pushes against a wall with twice as much force as Jordan, which of the following is TRUE?

• Elio is doing twice as much work as Jordan.

• They both generate work in equal amounts.

• No work is being done by Elio or Jordan

• None