Electromagnetic Spectra

Introduction to the Electromagnetic Spectrum

Multiple Choice

1. What do we need for everyday life, but can’t see, touch or smell?

• Electromagnetic Radiation

• Water

• Air

• Food

Multiple Choice

1. Which of the following types of electromagnetic radiation can measure longer than a mountain range?

• ultraviolet

• microwaves

• x-rays

• radio waves

Multiple Choice

1. On the electromagnetic spectrum, ______________ are the shortest.

• gamma rays

• infrared radiation

• x-rays

• radio waves

Fill in the Blank

1. EM waves are similar to ocean waves in that both transmit _ _ _ _ _ _.

2. Hint: The answer starts with the letter "E"

Multiple Choice

1. Electromagnetic waves are produced by the vibration of charged particles.

• True

• False

Multiple Choice

EM waves can travel through the vacuum of space. - they don't need a physical medium to propogate.

• True

• False

Labelling

Label the parts of the wave.

Drag labels to their correct position on the image

crest

wavelength

trough

Multiple Choice

The number of waves that pass somewhere in a second is:

• amplitude

• frequency

• wavelength

Multiple Choice

The unit for frequency is __.

• meters

• seconds

• Hertz

• degrees

Multiple Choice

Which portion of the electromagnetic spectrum includes the entire range of light that can be detected by the human eye? 

• ultraviolet light
• visible light
• infrared light
• x-rays

Multiple Choice

We see objects and their color because they

• refract light
• absorb light
• transmit light
• reflect light

Multiple Choice

Does the rose reflect or absorb red?

• Reflect
• Absorb

Multiple Choice

A blue dish appears blue because it

• absorbs blue light

• absorbs white light

• reflects white light

• reflects blue light

Multiple Choice

1. Everything around us emits, reflects and absorbs EM radiation _______________.

• the same

• differently

Anatomy of an Electromagnetic Wave

• ​a measure of the ability to do work.

• can transform from one type to another.

• Electromagnetic fields created when charged particles—such as electrons or protons move

• Electromagnetic fields transport the type of energy we call electromagnetic radiation, or light.

​Energy is

Fill in the Blank

Energy is the ability to do __________.

Hint: the answer is on the previous slide

• Waves in water and sound waves in air are two examples of mechanical waves.

• Mechanical waves are caused by a disturbance or vibration in matter

• Matter that waves travel through is called a medium.

• Water waves are formed by vibrations in a liquid

• Sound waves are formed by vibrations in a gas (air).

• Mechanical waves travel by causing the molecules to COLLIDE into one another,

  • like falling dominoes transferring energy from one to the next.

• Sound waves cannot travel in the vacuum of space because there is no medium (no atoms) to transmit the energy.

Electromagnetic and Mechanical Waves

Multiple Select

1. ____________ waves and ___________ waves are two important ways that energy is transported. (pick two)

• mechanical

• electromagnetic

• ladder

• book

Multiple Choice

You could hear a person speaking in space.

• True

• False

Multiple Choice

1. As energy increases the frequency ___________.

• decreases

• increases

• stays the same

Math Response

Calculate the speed of a wave that has a frequency of 15 Hz and a wavelength of 25 m.

Type answer here

Correct Answer: 375

Deg^°

Rad

Categorize

Options (7)

caused by disturbance in matter

require a medium to travel

do not require a medium to travel

can travel through the vacuum of space

ways that energy travels

travel in waves

can travel through gas and solid materials

Organize these options into the right categories

Mechanical Waves

Electromagnetic Waves

Both of these waves