Waves 2Nd Part

Front 1

Microwaves have the highest _________ of all radio wves.

Back 1

frequency

Front 2

Microwaves are how __________ are transmitted.

Back 2

telephone calls

Front 3

Microwaves transfer energy to ____________.

Back 3

food

Front 4

Radio wave, t.v. waves and microwaves are all types of electromagnetic waves. They only differ in _________________.

Back 4

Wave length.

Front 5

A device that uses microwaves to locate objects by working like an echo is called what.

Back 5

A radar device.

Front 6

Radar is sent through the atmosphere until they hit an _________. Waves bounce of the ___________ and are received by an antenna when they return.

Back 6

object.

Front 7

Radar used by who?

Back 7

Flight controllers, meterologist.

Front 8

What can penetrate haze, light,rain,snow, cloud, and smoke? These waves are also good for viewing the earth from space.

Back 8

Microwaves.

Front 9

Higher Frequency Waves are

Back 9

Infrared waves

Front 10

Infrared waves are electromagnetic waves with wavelengths _________ than those of microwaves.

Back 10

Shorter.

Front 11

When an object absorbs infrared waves it becomes __________.

Back 11

Warmer. Example - light keeps food warm. All materials give off infrared waves. Example - cameras, mosquitoes.

Front 12

Far infrared waves are __________.

Back 12

Thermal. We experience this type of infrared radiation everyday in the form of heat. Example sunlight, a fire, a radiator, a warm sidewalk.

Front 13

Shorter, near infrared waves are not ______ at all. Infact you cannot even feel them.

Back 13

Hot. Example Wavelengths like the ones used by your t.v.'s remote control.

Front 14

Humans, at normal body temperature radiate most strongly in the infrared at a wavelength of ____________.

Back 14

10 microns.

Front 15

What is a micron?

Back 15

term commonly used in astronomy for a micrometer or one millionth of a meter.

Front 16

Light. List colors in order

Back 16

Red, Orange, Yellow, Green, Blue, Indigo, Violet - make up white light (ROY G BIV)

Front 17

Red has the ____________wavelength.

Back 17

longest.

Front 18

Violet has the ___________
wavelength.

Back 18

shortest.

Front 19

___________ can separate light into colors.

Back 19

Prism

Front 20

Prism causes light to _______>

Back 20

Bend

Front 21

Light with __________wavelenghs bends more than the ___________wave length.

Back 21

shorter, longest

Front 22

Be able to draw a rainbow.

Back 22

Top color is red. Bottom color is violet.

Front 23

Ultraviolet waves have wavelengths shorter than wavelength of ___________.

Back 23

Light

Front 24

Ultraviolet waves are present in sunlight by you can't _____ them.

Back 24

See.

Front 25

Ultraviolet help the body produce ____________.

Back 25

Vitamin D

Front 26

Ultraviolet is needed to keep __________healthy.

Back 26

skin

Front 27

Ultraviolet can be __________ to skin.

Back 27

harmful. Can cause skin to darken or burn. Can cause cancer.

Front 28

Earth's atmosphere that protects us from ultraviolet rays is _________________.

Back 28

deteriorating. The use of sunblocks helps protect our skin.

Front 29

A useful balance of ultraviolet rays kills_________.

Back 29

germ. Kills germs on hospital equipment and combs on hairstylist combs.

Front 30

X-rays has a large amount of __________ and a wavelength just shorter than an ultraviolet wave.

Back 30

energy.

Front 31

X-rays can penetrate many materials such as _________.

Back 31

soft tissues of your body

Front 32

x-rays can be _________.

Back 32

harmful.

Front 33

X-ray technicans are careful not to ___________ their body.

Back 33

expose.

Front 34

______________ can protect your body from x-rays.

Back 34

Lead aprons. X-rays can't pass through lead.

Front 35

Gamma rays have the shortest _____________ and high _______.

Back 35

wavelengths, energy.

Front 36

Gamma rays can damage or __________________.

Back 36

destroy body cells

Front 37

Gamma rays can be good to kill ________________.

Back 37

cancer cells

Front 38

What are lasers?

Back 38

a device used to produce a very stron light beam.

Front 39

Lasers have one ___________________ that travels in one direction.

Back 39

wave length

Front 40

Lasers can go a longer __________.

Back 40

distance.

Front 41

White light is a mixture of many ________________.

Back 41

wavelengths.

Front 42

Lasers are a useful tool. Scientist use them to bounce off ______________ on the moon.

Back 42

mirrors

Front 43

Lasers are used for what else?

Back 43

Communication, delicate surgery, kills tumors, supermarket checkouts.