Investigating Waves [Ch.4-6]

Which of the following are types of invisible energy? [Check all that apply.]

• x-rays

• microwaves

• radio waves

• gamma rays

Tags

NGSS.MS-PS4-2

Electromagnetic energy can be very useful and never harmful.

• true

• false

Tags

NGSS.HS-PS4-4

Which of the following are used as a form of communication?

• symbols

• codes

• signals

• all of the above

Tags

NGSS.MS-PS4-3

What type of energy transfer takes place when using cell phones or two-way radios?

• light energy to radio waves

• sound energy to radio waves

• sound energy to light energy

• light energy to sound energy

What are two ways to send information in a wave signal?

• intensity and frequency

• vibrations & sounds

• crests and troughs

• analog and digital signals

Tags

NGSS.MS-PS4-3

How are analog signals sent?

• as continuous waves

• as separate bits and not continuous

Tags

NGSS.MS-PS4-3

How are digital signals sent?

• as continuous waves

• as separate bits and not continuous

Tags

NGSS.MS-PS4-3

What type of pattern does a cell phone turn your message into?

• digital pattern of 5's and 10's

• alphabetic letters

• digital pattern of 0s and 1s

• morse code

Tags

NGSS.MS-PS4-3

A process of transferring information via light waves using a special cable is...

• GPS [Global Positioning System].

• fiber optics.

Tags

NGSS.MS-PS4-3

A system for helping people find their location, or figuring out where some other location is, is called...

• GPS [Global Positioning System].

• fiber optics.