Sci test waves

Question 1

What is one type of main wave?

Answer 1

Mechanical

Question 2

What is the other type?

Answer 2

electromagnetic

Question 3

Waves travel through?

Answer 3

Medium

Question 4

How do microwave ovens heat up food?

Answer 4

absorption

Question 5

Electromagnetic waves with the longest wavelengths and lowest frequencies

Answer 5

radio

Question 6

Tool that separates light into rainbow.

Answer 6

prism

Question 7

Matter through which a mechanical wave travels:

Answer 7

medium

Question 8

A wave in which the energy travels perpendicular to the direction of the disturbance:

Answer 8

Transverse Waves

Question 9

White objects do what to all 7 colors?

Answer 9

Reflects

Question 10

Black objects ________ all 7 colors of light.

Answer 10

absorb

Question 11

List the 3 primary colors of light:

Answer 11

Red, green, and blue.

Question 12

List the 3 secondary colors of light:

Answer 12

magenta, cyan, and yellow

Question 13

Why is a red car red?

Answer 13

it reflects red to your eyes

Question 14

What is the equation for finding the velocity or speed of a wave?

Answer 14

v= f x w

Question 15

If the speed of a wave is 335 m/s and its frequency is 67 Hz, what is its wavelength?

Question 16

Formula for wavelength?

Answer 16

λ = v / f

Question 18

What is the electromagnetic spectrum?

Answer 18

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including visible light, radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays.

Question 19

True or False: The speed of light is the same for all types of electromagnetic waves.

Answer 19

True

Question 20

Which type of electromagnetic radiation has the longest wavelength?

Answer 20

Radio waves

Question 21

Fill in the blank: The electromagnetic spectrum is divided into regions based on __________.

Answer 21

wavelength and frequency

Question 22

What is the frequency range of visible light in Hz?

Answer 22

Approximately 4 x 10^14 to 8 x 10^14 Hz

Question 23

What type of electromagnetic radiation is used in microwave ovens?

Answer 23

Microwaves

Question 24

True or False: Ultraviolet light has a shorter wavelength than visible light.

Answer 24

True

Question 25

Which region of the electromagnetic spectrum is used for medical imaging?

Answer 25

X-rays

Question 26

What is the order of the electromagnetic spectrum from longest wavelength to shortest?

Answer 26

Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays

Question 27

Fill in the blank: Gamma rays have the __________ frequency in the electromagnetic spectrum.

Answer 27

highest

Question 28

What is the primary source of ultraviolet radiation?

Answer 28

The Sun

Question 29

True or False: Infrared radiation is primarily used for night vision technologies.

Answer 29

True

Question 30

What is the main characteristic that distinguishes different types of electromagnetic radiation?

Answer 30

Wavelength and frequency

Question 31

Which type of electromagnetic wave is used for communication in mobile phones?

Answer 31

Radio waves

Question 32

What happens to the energy of electromagnetic waves as their frequency increases?

Answer 32

The energy increases.

Question 33

True or False: Electromagnetic waves can travel through a vacuum.

Answer 33

True

Question 34

What is the range of wavelengths for microwaves?

Answer 34

Approximately 1 mm to 1 m

Question 35

Which type of radiation is responsible for sunburn?

Answer 35

Ultraviolet radiation

Question 36

Fill in the blank: The visible spectrum ranges from __________ to __________ nanometers.

Answer 36

380, 750

Question 37

What is the use of infrared radiation in everyday technology?

Answer 37

Remote controls and thermal imaging

Question 38

True or False: Visible light is the only part of the electromagnetic spectrum that can be seen by the human eye.

Answer 38

True

Question 39

What is the primary application of gamma rays?

Answer 39

Cancer treatment and sterilization of medical equipment

Question 40

What type of electromagnetic radiation is used in television broadcasting?

Answer 40

Radio waves

Question 41

Fill in the blank: Electromagnetic waves are produced by __________ charges.

Answer 41

accelerating

Question 42

What property of electromagnetic waves allows them to carry energy through space?

Answer 42

Their oscillating electric and magnetic fields

Question 43

Which part of the electromagnetic spectrum is primarily absorbed by the ozone layer?

Answer 43

Ultraviolet radiation

Question 44

What is the phenomenon called when light bends as it passes from one medium to another?

Answer 44

Refraction

Question 46

What is the electromagnetic spectrum?

Answer 46

The electromagnetic spectrum is the range of all types of electromagnetic radiation.

Question 47

What type of radiation has the longest wavelength?

Answer 47

Radio waves have the longest wavelength in the electromagnetic spectrum.

Question 48

True or False: Visible light is a small part of the electromagnetic spectrum.

Answer 48

True.

Question 49

What is the speed of electromagnetic waves in a vacuum?

Answer 49

The speed of electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (or about 300,000 kilometers per second).

Question 50

Fill in the blank: The part of the electromagnetic spectrum that we can see is called __________.

Answer 50

visible light.

Question 51

Which type of electromagnetic radiation is used for communication, such as cell phones and radios?

Answer 51

Radio waves.

Question 52

What are ultraviolet rays known for?

Answer 52

Ultraviolet rays are known for their ability to cause sunburn and are used in sterilization.

Question 53

What is the order of the electromagnetic spectrum from longest wavelength to shortest wavelength?

Answer 53

Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays.

Question 54

True or False: Infrared radiation is used in remote controls for televisions.

Answer 54

True.

Question 55

What type of electromagnetic radiation can penetrate human tissue?

Answer 55

X-rays.

Question 56

Which color of visible light has the shortest wavelength?

Answer 56

Violet.

Question 57

What is the primary source of all electromagnetic radiation on Earth?

Answer 57

The Sun.

Question 58

Fill in the blank: Microwaves are commonly used for __________.

Answer 58

cooking food.

Question 59

What does the term 'frequency' refer to in the context of electromagnetic waves?

Answer 59

Frequency refers to the number of waves that pass a point in one second.

Question 60

Which type of electromagnetic radiation is used in medical imaging?

Answer 60

X-rays.

Question 61

True or False: Gamma rays have lower energy than radio waves.

Answer 61

False.

Question 62

What is the wavelength range of visible light?

Answer 62

Approximately 400 to 700 nanometers.

Question 63

Fill in the blank: Ultraviolet rays can cause __________ damage.

Answer 63

skin.

Question 64

What is the use of infrared radiation in everyday life?

Answer 64

Infrared radiation is used in thermal imaging and night vision devices.

Question 65

What is the relationship between wavelength and frequency?

Answer 65

Wavelength and frequency are inversely related; as one increases, the other decreases.

Question 66

Which part of the electromagnetic spectrum is primarily responsible for heating effects?

Answer 66

Infrared radiation.

Question 67

Fill in the blank: The __________ spectrum includes all the colors of light that are visible to the human eye.

Answer 67

visible.

Question 68

What is a common use of gamma rays?

Answer 68

Gamma rays are used in cancer treatment and sterilizing medical equipment.

Question 69

True or False: All electromagnetic waves travel at the same speed in a vacuum.

Answer 69

True.

Question 70

What is the main characteristic that distinguishes different types of electromagnetic radiation?

Answer 70

Wavelength and frequency.

Question 71

What are the two main categories of electromagnetic waves?

Answer 71

Ionizing radiation and non-ionizing radiation.

Question 72

Fill in the blank: The __________ of a wave is the distance between two consecutive peaks.

Answer 72

wavelength.