2 B & C

Question 1

True or false: all forces act in pairs

Answer 1

True

Question 2

_________ forces occur when objects touch each other.

Answer 2

Contact

Question 3

The force of _______ pushes objects together

Answer 3

Compression

Question 4

The force of ________ causes the particles in an object to move across each other in layers, like when rocks move past each other

Answer 4

Shear

Question 5

The force of _______pulls on an object, usually in a straight line, like tug of war

Answer 5

Tension

Question 6

The force of ________opposes the motion of objects in contact, like ice grinding against rock.

Answer 6

Friction

Question 7

True or false: field forces have to touch.

Answer 7

false. Field forces DO NOT touch. The object doing the force can attract or repel the objects in the space around it, like MAGNETIC FORCE

Question 8

___________gives things weight and its effects are the most noticeable, like keeping the planets in place.

Answer 8

Gravity

Question 9

What acts against gravity to keep you from sinking into solid ground?

Answer 9

The ground. It pushes back against gravity.

Question 10

What force is lightning?

Answer 10

Electric force

Question 11

What force does a rope use when holding a climber?

Answer 11

Tension

Question 12

_________ is the ability to do work

Answer 12

Energy

Question 13

________ is a force that acts on an object as it moves through a distance.

Answer 13

Work

Question 14

_______ is the ability an object has to do work.

Answer 14

Energy.

Example: when you lift a weight, you use energy.

Question 15

________ energy is an energy that causes things to move, like moving water or a hurricane.

Answer 15

Kinetic

Question 16

___________ energy occurs when a force acting on it gives it the potential to move, like a boulder on top of a peak

Answer 16

Potential

Question 17

A force is a push or a ________

Answer 17

Pull

Question 18

What are 2 kinds of mechanical energy?

Answer 18

Potential and kinetic

Question 19

All objects have thermal energy. The _______ an object is, the more thermal energy it has.

Answer 19

Hotter

Ex: the sun has the most thermal energy

Question 20

________ energy is produced by particle motion moving in the same direction.

Answer 20

Sound energy

Example: music or waves

Question 21

_________ energy is energy that uses electrical charges, like lightning

Answer 21

Electrical

Question 22

Everything that gives of light produces ________ energy

Answer 22

Light

Question 23

When atoms are split, ________ energy forms.

Answer 23

Nuclear

Question 24

Name the principle:

Energy cannot be created or destroyed, but can only be changed from one form to another.

Answer 24

First Law of Thermodynamics

OR

Conservation of Energy