Chapter 3, Test 2 Flashcards by Crystal Lee

Q

True or False

Unbalanced forces do work.

A

True

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Q

True or False

The frame is the base of a building.

A

False (Foundation)

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Q

True or False

Opposite poles of a magnet repel.

A

False (attract)

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Q

True or False

Sir Isaac Newton discovered the laws of motion.

A

True

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Q

True or False

The axle is the part of a lever which holds and balances wait.

A

False (fulcrum)

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Q

True or False

Mass, speed, and direction are all part of an objects moving energy.

A

True

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Q

True or False

Inertia is a property of matter that makes it resist a change in motion.

A

True

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Q

True or False

An electromagnet can generate gravity.

A

False (electromagnetic force)

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Q

True or False

An object in motion will stay at rest, unless acted upon by an unbalanced force.

A

False (in motion)

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Q

True or False

A machine is a device that makes work easier.

A

True

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Q

Give an example of something with more mass than a car.

A

Airplane

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Q

Give an example of something with less mass than an elephant.

A

Cat

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Q

Why does the moon have less gravity than the Earth?

A

It’s smaller

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Q

_____ is the push or a pull on an object to move it.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

force

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Q

____ is the most stable shape because of a low center of gravity.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Pyramid

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Q

_____ is a property of matter that makes it resist a change in motion.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Inertia

Q

____ acts like a giant electromagnet.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Earth

Q

_____ is the movement resulting from force.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Work

Q

_____ increases with a rough surface.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Friction

Q

_____ are two objects bumping into each other.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Collision

Q

____ has a magnetic field because of its polarity.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Magnet

Q

____ is the amount of matter in an object has.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Mass

Q

_____ is a type of inclined plane.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

screw

Q

_____ is a machine that can help overcome friction.

collision
cube
Earth
force
friction
inertia
magnet
mass
pyramid
screw
wheel and axle
work

A

Wheel and axle

A _____ has more inertia in a dog. any horse kitten

horse

A ____ is a machine designed to overcome wait and make lifting easier. pulley wave wheel and axle

pulley

Sound community sample of _____ energy in a collision. converted moving transferred

Converted

A ____ gives a building a shape. frame foundation fulcrum

frame

Energy transfers in a collision can cause the ____ of objects to change. mass speed weight

speed

Wax can be used as a ______ to minimize friction. lodestone lubricant machine

lubricant

Balanced Forces or Unbalanced Forces Prevent work from being done

Balanced forces

Balanced Forces or Unbalanced Forces allow work to be done

Unbalanced Forces

Balanced Forces or Unbalanced Forces a chair resting on the floor

Balanced forces

Balanced Forces or Unbalanced Forces a person pushing a lawnmower

Unbalanced forces