Exam 1

Question 0

An object with potential energy is

Answer 0

At rest

Question 1

The ability to do work.

Answer 1

energy

Question 2

What kind of energy do fuels contain?

Answer 2

Potential

Question 3

Are fuels, wind, and moving water partially or directly dependent on solar energy?

Answer 3

Partially

Question 4

By what method does heat energy travel and gets transferred from molecule to molecule.

Answer 4

Conduction

Question 5

Is wood a good conductor or insulator?

Answer 5

Insulator

Question 6

When a gas or liquid is heated, in which way do the molecules move?

Answer 6

Away from each other

Question 7

When heat energy is transferred by the circulation of heated materials, it is called:

Answer 7

Convection

Question 8

Liquid and gases transfer heat by what method?

Answer 8

Convection

Question 9

Radiant energy produces what kind of energy when it strikes something?

Answer 9

Heat energy

Question 10

Light rays are a form of what kind of energy?

Answer 10

Radiant

Question 11

During photosynthesis, what kind of energy do plants use?

Answer 11

Radiant energy

Question 12

Photosynthesis results in the production of:

Answer 12

Oxygen

Question 13

Food and fuels are both the result of what kind of energy?

Answer 13

Chemical

Question 14

What is the longest wavelength of light visible to the human eye?

Answer 14

Red

Question 15

Can sound energy pass through empty space?

Answer 15

No.

Question 16

Sounds with a high pitch are vibrating at what kind of frequency?

Answer 16

High ( short and fast)

Question 17

Is pushing against a rock, but not moving it work.

Answer 17

No.

Question 18

Name two measurements of work:

Answer 18

Power•time

Force•distance

Question 19

What unit measures heat energy?

Answer 19

Calorie

Question 20

What unit measures electric energy?

Answer 20

Kilowatt

Question 21

What unit measures force

Answer 21

Foot-pound

Question 22

What is important when measuring power. Time, pitch, or heat?

Answer 22

Time

Question 23

Name two material which absorb radiant energy well.

Answer 23

Dark colors

Soil and rocks

Question 24

Name materials that reflect radiant energy well.

Answer 24

Light colored materials Smooth shiny surfaces Large bodies of water

Question 25

Does matter have volume?

Answer 25

Yes

Question 26

Is the density of a of pound cotton and a pound of lead the same or is it different?

Answer 26

Different

Question 27

Carbon dioxide, water, and glucose are made of two or more elements so they are:

Answer 27

Compounds

Question 28

The smallest unit of an element which retains the characteristic of that element.

Answer 28

Atom. Atoms of iron are different than atoms of tin.

Question 29

Matter with a definite volume, but without a definite shape is a

Answer 29

Solid

Question 30

How do the number of protons and electrons relate in an atom? They are:

Answer 30

Equal

Question 31

What subatomic particle is farthest from the nucleus of atom, and is in the highest energy level?

Answer 31

Electron

Question 32

Most of an atoms mass is in its

Answer 32

Nucleus

Question 33

The chemical symbol for Sodium

Answer 33

Na

Question 34

The total number of atoms represented by the formula 2CO2

Answer 34

6

Question 35

When two atoms join by sharing electrons the bond is called

Answer 35

Covalent

Question 36

An element that is found in all acids is called

Answer 36

Hydrogen

Question 37

An element found in all organic molecules is

Answer 37

Carbon

Question 38

A substance that has more hydroxyl ions (OH-) than hydrogen ions (H+), it is a

Answer 38

Base

Question 39

A substance which helps make a chemical change happen , but is not changed itself is called a

Answer 39

Catalyst

Question 40

Rusting iron is an example of what kind of change?

Answer 40

Chemical

Question 41

The process of changing from a gas to a liquid is called

Answer 41

Condensation

Question 42

A mixture in which the smallest particles of two or more substances are evenly distributed is known as a

Answer 42

Solution

Question 43

The Celsius temperature at which water becomes a solid is

Answer 43

0 degrees

Question 44

The temperature at which a substance freezes is also its

Answer 44

Melting point

Question 45

When the air pressure is low, the freezing point of water

Answer 45

Increases

Question 46

Negatively charged, smallest of particles, 2000 are needed to equal mass of a proton, located outside nucleus.

Answer 46

Electron

Question 47

Has a positive charge. Has the same number as electrons in an atom. Located with neutrons in the nucleus.

Answer 47

Proton

Question 48

Have neutral charge. Have almost same mass as protons. With protons they make up the nucleus of an atom

Answer 48

Neutron