ELECTROMAGNETIC SPECTRUM

Question 1

Waves that are made of electric and magnetic field components

Answer 1

Electromagnetic waves

Question 2

Longest wavelength and lowest frequency

Answer 2

Radio waves

Question 3

Used to broadcast radio and television

Answer 3

Radio waves

Question 4

Between one NM and one mm

Answer 4

Microwave

Question 5

Used in cooking, radar, telephones, and other signal

Answer 5

Microwave

Question 6

Shorter wavelength than microwave but longer than visible light

Answer 6

Infared

Question 7

Transmits heat from sun, fire, and radiators

Answer 7

Infared

Question 8

400 NM to 10 nm

Answer 8

Ultraviolet

Question 9

Absorbed by the skin, used in fluorescent tubes

Answer 9

Ultraviolet

Question 10

Can pass through several opaque materials such as human body tissue

Answer 10

X ray and Gamma ray

Question 11

Used in medicine for killing cancer cells

Answer 11

Gamma rays

Question 12

Postulated that light “coming from the eye” travels in a straight line

Answer 12

Euclid of Alexandria

Question 13

Famous for geocentric model. Studied the refraction of light and color phenomena

Answer 13

Claudius Ptolemy

Question 14

Used apparent change in the position of stars as earth revolves around the sun to measure the speed of light

Answer 14

James Bradley

Question 15

Made attempts in measuring the speed of light but their methods did not yield useful

Answer 15

Galileo Galelei and Ole Roemer

Question 16

Proposed that Light is made of a stream travelling in a straight path

Answer 16

Isaac newton

Question 17

Bouncing of light on a surface

Answer 17

Reflection

Question 18

Presence of certain force

Answer 18

Refraction

Question 19

Suggested that light should be considered to be composed of Small packets of energy called photons

Answer 19

Albert Einstein

Question 20

Mathematical theory. Light is an energy carrying disturbance or vibration similar to sound and water ripples

Answer 20

Christiaan Huygens

Question 21

Came up with the electromagnetic thoery

Answer 21

James Clerk Maxwell

Question 22

Discovered radio waves

Answer 22

Heinrich Hertz

Question 23

Passing of light through a material medium

Answer 23

Transmission

Question 24

The separation of light into different colors

Answer 24

Dispersion

Question 25

Material takes in light and converts it into different forms of energy

Answer 25

Absorption

Question 26

Splitting and bending of light into several directions

Answer 26

Scattering

Question 27

Spreading of light after passing through a narrow slit

Answer 27

Diffraction

Question 28

Overlapping of two or more waves into one wave when they pass the same point

Answer 28

Interference

Question 29

Opposite parts of 2 waves meet

Answer 29

Destructive

Question 30

Identical parts of 2 waves meet

Answer 30

Constructive

Question 31

The distance the wave covers per cycle of propagation

Answer 31

Wavelength

Question 32

The times it takes for the wave to finish one wavelength to pass through

Answer 32

Period

Question 33

number of complete waves passing through a unit of time

Answer 33

Frequency