Last Finals

Question 1

Give an example of a transverse wave and describe the different parts of the wave

Answer 1

Answer: ripples on water; wavelength, amplitude, frequency, crest, trough.

Question 2

Give an example of a compressional wave and describe the parts of the wave

Answer 2

Answer: sound wave; compression, rarefaction, wavelength.

Question 3

The sun shines through a light rain creating a rainbow. What property of light waves is being demonstrated. Explain your answer

Answer 3

Answer: light enters the water droplet rarefaction bends it and splits the colors.

Question 4

Explain how the wavelength and frequency of a wave are related to the amount of energy in a wave

Answer 4

Answer: the smaller the wave the more frequency it has.

Question 5

You are standing in a large empty building and as you talk you can hear your voice return to you after a second or two. What property of waves is being demonstrated. Explain your answer

Answer 5

Answer: reflection; your voice hits the other side of the building and bounces back.

Question 6

What property of the sun controls the orbits of the planets?

Answer 6

Answer: gravity

Question 7

The inner four planets of our solar system are described by what term

Answer 7

Answer: terrestrial planets

Question 8

Place the planets in the correct order with the planet closest to the sun

Answer 8

Answer: M, V, E, M, J, S, U, N, P.

Question 9

The orbits of most planets are what shape

Answer 9

Answer: elliptical

Question 10

Objects in galaxies are held together by _______

Answer 10

Answer: gravitational pull

Question 11

What occurs during a lunar eclipse

Answer 11

Answer: the moon passes through the earths shadow.

Question 12

What phase of the moon does a lunar eclipse occur during

Answer 12

Answer: full moon

Question 13

What type of eclipse is pictured in the diagram

Answer 13

Answer: solar eclipse

Question 14

Know the phases of the moon by their position in orbit

Answer 14

Answer: know their position

Question 15

When the illuminated part of the moon appears to get smaller each night, the phases are said to be ___

Answer 15

Answer: waning

Question 16

When the visible part of the moon increases each night, the moon is said to be ___

Answer 16

Answer: waxing

Question 17

The average daily temperature in the northern hemisphere is coldest when ______

Answer 17

Answer: the suns rays hit the northern hemisphere at an indirect angle.

Question 18

Because the sun’s rays strike different parts of the Earth at different angles throughout the year, we have ______

Answer 18

Answer: seasons

Question 19

The seasons are the result of the ______ tilt of the earths ____ as it orbits the sun

Answer 19

Answer: 23.5, axis

Question 20

As the Earth revolves around the sun the Earth’s axis _________

Answer 20

Answer: stays the same

Question 21

When is Earth’s axis tilted neither toward nor away from the sun

Answer 21

Answer: spring and autumn

Question 22

At the start of what season is the sun lowest in the sky

Answer 22

Answer: winter

Question 23

What is true about the Moon’s rotation

Answer 23

Answer: multiple choice

Question 24

When the northern hemisphere is experiencing winter the souther hemisphere is experiencing____

Answer 24

Answer: summer

Question 25

A scientist observes the same craters on the surface of the moon everyday because ____

Answer 25

Answer: the moons rotation is the same speed as it’s revolution

Question 26

What is the darkest part of the shadow called

Answer 26

Answer: umbra

Question 27

The lighter part of the shadow is called the _______

Answer 27

Answer: penumbra

Question 28

Why do we not have an eclipse every new and full moon?

Answer 28

Answer: the moons orbit has a tilt of 5 degrees

Question 29

Tides are caused by the gravitational pull of the ___

Answer 29

Answer: moon

Question 30

How many high tides occur in a 24 hour period

Answer 30

Answer: two

Question 31

What type of tides occurs when the high tides are highest and the low tides are lowest

Answer 31

Answer: neap tides

Question 32

Analog waves can carry more data than digital waves. True or False

Answer 32

Answer: true

Question 33

Analog wave are better for transmitting data because they do not degrade. True or False

Answer 33

Answer: false

Question 34

Describe the difference between mechanical and electromagnetic wave

Answer 34

Answer: mechanical waves require a medium electromagnetic waves don’t

Question 35

Know the methods to find the wavelength, frequency or speed of a wave

Answer 35

Answer: ok

Question 36

Know the units for speed, frequency, and wavelength

Answer 36

Answer: speed m/s, wavelength m, frequency Hz.

Question 37

Match the type of wave with its uses

1. radio
2. microwave
3. infrared
4. visible light
5. ultraviolet
6. xray
7. gamma

A.vision 
B.imaging the body 
C.sterilization of medical tools 
D.thermal imaging 
E.transmission of TV signals 
F.WiFi 
G.radiation therapy

Answer 37

Answer: 1-E, 2-F, 3-D, 4-A, 5-C, 6-B, 7-G

Question 38

How many tides occur in a 24 hour period

Answer 38

Answer: four