Unit 4 - Worksheet A: Lessons 1-3

Pelamis Wave Energy Converter, an oscillating water column, and pendulum systems are all ways in which waves can be converted into what form of energy?

• mechanical

• chemical

• solar

• electrical

Identify the part of the wave that is found by dividing the speed of the wave by the frequency of the wave.

• 1

• 2

• 3

• 4

_______ is the behavior that ensues when a wave encounters an obstacle or must pass through an opening.

• Transmission

• Absorption

• Reflection

• Diffraction

During a routine eye examination, a vision test is given. This test will tell the eye doctor exactly what prescription is needed for glasses or contact lenses. Normally, a value of 20/20 is considered perfect vision. Individuals who can read letters that are 3/8 of an inch tall from at least 20 feet away would have 20/20 vision. If an induvial does not have 20/20 vision, they have what is called a'refractive error".

What causes this refractive error?

• The light is not being reflected from the lens of the eye.

• The light is not being absorbed when it hits the lens of the eye.

• The light is not being transmitted when it passes through the lens of the eye.

• The light is not bending properly when it passes through the lens of the eye.

Demonstrate the correct order of electromagnetic waves from LOWEST to HIGHEST frequency.

1. X-Rays

2. Infrared

3. Ultraviolet

4. Gamma Rays

5. Radio Waves

6. Microwaves

• 5, 3, 4, 6, 1, 2

• 6, 3, 2, 5, 1, 4

• 2, 6, 1, 5, 3, 4

• 3, 4, 5, 1, 2, 6

The image represents __________.

• diffraction

• reflection

• destructive interference

• constructive interference

An object will appear _____ because it reflects light of all wavelengths at a/an  _____ rate.

• white, different

• black, different

• white, equal

• black, equal

What technology has allowed scientists to process sound waves by tracking how the waves bounce off nearby objects and reflect back to the original source of the sound? 

• television

• sonar

• radio

• telegraph

Identify the part of the wave that is a measure of the energy in wave.

*the distance from crest or trough to resting position in transverse waves

*the denser the compression, the larger the amplitude in a compressional wave

• 1

• 2

• 3

• 4

The image represents __________.

• diffraction

• reflection

• destructive interference

• constructive interference