2d Semester Final

Question 1

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

Answer 1

A water wave

Question 2

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

Answer 2

Sound waves made from something that makes sound

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

It’s from refraction it bounces off the droplet and makes a rainbow

Question 4

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

Answer 4

By the speed and how far it can go

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

It’s refraction it bounces off a wall and comes back

Question 6

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

Answer 6

The mass and the gravitational pull of the sun

Question 7

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

Answer 7

Trestreal planets

Question 8

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

Answer 8

Mercury,venues,earth,mars,Jupiter,Saturn,Uranus,Neptune,

Pluto.

Question 9

The orbits of most planets are what shape?

Answer 9

Elliptical

Question 10

Objects in galaxies are held together by _______

Answer 10

Gravity

Question 11

What occurs during a lunar eclipse?

Answer 11

The moon turns red and it goes in the earth shadow

Question 12

What type of eclipse is pictured in the diagram.

Answer 12

Lunar

Question 13

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

Answer 13

A waning

Question 14

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

Answer 14

It is waxing

Question 15

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

Answer 15

It is coldest when the earth is farther from the sun

Question 16

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

Answer 16

Seasons

Question 17

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

Answer 17

23.5,axis

Question 18

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

Answer 18

Pointed in the same direction

Question 19

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

Answer 19

Is in the fall

Question 20

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

Answer 20

Winter

Question 21

What is true about the Moon’s rotation?

Answer 21

The moon rotates for every revaluation

Question 22

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

Answer 22

Summer

Question 23

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

Answer 23

The moon dose not rotate on its axis

Question 24

What is the darkest part of the shadow called?

Answer 24

Umbra

Question 25

The lighter part of the shadow is called the _______.

Answer 25

Penumbra

Question 26

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

Answer 26

Because of the tilt of the earthed axis

Question 27

How many tides occur in a 24 hour period?

Answer 27

4

Question 28

Tides are caused by the gravitational pull of the ___.

Answer 28

Moon

Question 29

How many high tides occur in a 24 hour period?

Answer 29

2

Question 30

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

Answer 30

Neap tides

Question 31

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

Answer 31

False

Question 32

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

Answer 32

True

Question 33

Describe the difference between mechanical and electromagnetic wave

Answer 33

An electromagnetic wave are like phones and iPads, mechanical waves are like yelling

Question 34

Speed = frequency X wavelength
Frequency= speed divided by wavelength
Wavelength = speed divided by frequency.

Answer 34

The wavelength, speed and frequency math