Chapter 14 (6)

Question 1

ENERGY

Answer 1

the ability to cause change in matter

Question 2

POTENTIAL ENERGY

Answer 2

energy that is due to the position or condition of an

object

Question 3

KINETIC ENERGY

Answer 3

the energy of motion

Question 4

LAW OF CONSERVATION OF ENERGY

Answer 4

the rule stating that the total amount of energy in a closed system is always the same-energy cannot be created or destroyed

Question 5

WAVE

Answer 5

a disturbance that carries energy through matter or

space

Question 6

WAVELENGTH

Answer 6

the distance from the middle of the crest of one wave to the middle of the crest of the next wave

Question 7

AMPLITUDE

Answer 7

the distance in a wave from the resting point to the top of the crest or to the bottom of the trough

Question 8

FREQUENCY

Answer 8

the number of vibrations or waves that pass a certain point in a given amount of time

Question 9

ELECTROMAGNETIC SPECTRUM

Answer 9

all of the energy waves that travel at the speed of light in a vacuum; includes radio, infrared, visible, ultraviolet, X rays, and gamma rays

Question 10

REFLECTION

Answer 10

the bouncing of light off a surface

Question 11

REFRACTION

Answer 11

the bending of light as it passes from one material to another

Question 12

DIFFRACTION

Answer 12

the bending of light around the edge of an object

Question 13

TRANSPARENT

Answer 13

allowing almost all light to pass through

Question 14

TRANSULENT

Answer 14

allowing some light to pass through

Question 15

OPAQUE

Answer 15

not allowing any light to pass through

Question 16

Amplitude determines…

Answer 16

loudness

Question 17

Frequency determines…

Answer 17

pitch

Question 18

___∞___ wavelength= ___∞___ frequency= ___∞___ pitch

Answer 18

longer wavelength= lower frequency= lower pitch

Question 19

longer ______= lower ________= lower ________

Answer 19

longer wavelength= lower frequency= lower pitch

Question 20

___«___ wavelength= ___«___ frequency= ___«___ pitch

Answer 20

shorter wavelength= higher frequency= higher pitch

Question 21

short _______= higher _______= higher _______

Answer 21

shorter wavelength= higher frequency= higher pitch

Question 22

How does the wavelength change across the spectrum, where is each wave type?

Answer 22

Changes across the spectrum because wavelengths that are little shorter than visible light waves have higher frequencies.

Question 23

How do musical instruments produce sound?

Answer 23

They produce sound by the sound pushes on the air molecules next to it, then this push squeezes and compresses together forming the compression part of the sound wave.

Question 24

Example of kinetic and potential energy, refraction, reflection.

Answer 24

Example of kinetic and potential energy, refraction, reflection.

Question 25

Why do objects appear to be a certain color?

Answer 25

Objects appear to be a certain color because of which light they reflect and absorb other wavelengths. For example, an orange appears orange because it reflects orange light and absorbs other wavelengths.

Question 26

Is chemical energy produced when fossil fuels are burned?

Answer 26

YES

Question 27

Does light travel faster through air or water?

Answer 27

AIR