Introduction to Electromagnetic Radiation

Introduction to the Electromagnetic Spectrum

Multiple Choice

1. Which of the following 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

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

​Energy, a measure of the ability to do work.

It comes in many forms and can transform from one type to another.

Charged particles—such as electrons and protons—create electromagnetic fields when they move, and these fields transport the type of energy we call electromagnetic radiation, or light.

• 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, whether solid, gas, liquid, or plasma.

• Matter that waves are traveling through is called a medium.

• Water waves are formed by vibrations in a liquid and sound waves are formed by vibrations in a gas (air).

• These mechanical waves travel through a medium by causing the molecules to bump into each other, like falling dominoes transferring energy from one to the next.

• Sound waves cannot travel in the vacuum of space because there is no medium to transmit these mechanical waves.

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 wavelength ___________.

• decreases

• increases

• stays the same

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