Waves

Question 1

What is a transverse wave?

Answer 1

Wave that consists of a disturbance occurring perpendicular to the travel direction of the wave.

Question 2

What is a longitudinal wave?

Answer 2

• A wave consists of a disturbance occurring parallel to the travel direction of the wave.
• A demonstration would be a spring moving your hands forward and backward creating a longitudinal wave.
• The individual particles in a wave do not travel but only vibrate around a point.

Question 3

What is a pulse wave?

Answer 3

A wave that is caused by a single disturbance.

Question 4

What is a periodic wave?

Answer 4

A wave that is caused by a continuous and repetitive disturbance.

Question 5

What are waves?

Answer 5

A wave is a transfer of energy (not matter).

Question 6

What can a soundwave travel through?

Answer 6

Anything with particles, like a solid liquid and gas. But not a vaccume.

Question 7

What is compression?

Answer 7

Where the particles are close together in a wave.

Question 8

What is rarefraction?

Answer 8

Where the particles are far apart in an area of a longitudinal wave.

Question 9

What is the speed of sound?

Answer 9

340 m/s (in air)

Question 10

What is the equation for the speed of sound?

Answer 10

Question 11

What are amplitude, length, and wavelength?

Answer 11

• Amplitude: The height of a wave from the equilibrium (The maximum height from the equilibrium position)
• Wavelength: The length of one full wave (the difference between two successive similar points on the wave)
• Length: the length of one full wave

Question 12

What is time period?

Answer 12

The time it takes for a full wave to occur. It is measured in seconds (s).

Question 13

What is frequency?

Answer 13

• It is the number of waves that pass by per second.
• The units are Hertz (Hz)
• High-pitched sounds have a higher frequency than lower-pitched sounds
• The equation to find frequency is:

Question 14

What are the symbols?

Answer 14

Question 15

How do you measure wave speed?

Answer 15

Wave Speed= frequency x wavelength

Question 16

What is ultrasound?

Answer 16

• Anything higher than 20,000 Hz is considered an ultrasound, humans can’t hear because they have a very high frequency
• Some animals emit ultrasound to locate objects
• Ultrasound has many applications in medicine, including ultrasound scans to check on the health of unborn babies

Question 17

What is the equation for distance?

Answer 17

Distance+ speed x time

Question 18

What are reflection, refraction, and diffraction?

Answer 18

• Reflection: when it bounces back off a surface
• Diffraction: When it bends around corners
• Refraction: It changes in speed and direction when it goes into a different substance/ surface

Question 19

What are light waves?

Answer 19

• Light waves are also known as transverse waves
• They do not need particles to travel through meaning it can travel through a vaccume
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Question 20

What are the types of electromagnetic radiation?

Answer 20

• Gamma rays
• X-rays
• Ultraviolet
• Visible light
• Infarred
• Microwaves
• Radio waves

Question 21

What speed do all electromagnetic waves go?

Answer 21

300mil m/s

Question 22

Remember

Answer 22

Question 23

What is a normal?

Answer 23

An imaginary line that is perpendicular to the surface in which the ray of light is reflecting off.

Question 24

What is total internal reflection?

Answer 24

At a certain angle of the light, the light can refract back into the material.

Question 25

What is spectacular reflection and diffuse reflection?

Answer 25

• Speticular reflection is light reflected in a regular manner
• Diffuse reflection: the light is reflected in random directions if the material isn’t smooth