2d Semester Final Flashcards
Give an example of a transverse wave and describe the different parts of the wave
A water wave
Give an example of a compressional wave and describe the parts of the wave.
Sound waves made from something that makes sound
The sun shines through a light rain creating a rainbow. What property of light waves is being demonstrated. Explain your answer.
It’s from refraction it bounces off the droplet and makes a rainbow
Explain how the wavelength and frequency of a wave are related to the amount of energy in a wave.
By the speed and how far it can go
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.
It’s refraction it bounces off a wall and comes back
What property of the sun controls the orbits of the planets?
The mass and the gravitational pull of the sun
The inner four planets of our solar system are described by what term?
Trestreal planets
Place the planets in the correct order with the planet closest to the sun rst.
Mercury,venues,earth,mars,Jupiter,Saturn,Uranus,Neptune,
Pluto.
The orbits of most planets are what shape?
Elliptical
Objects in galaxies are held together by _______
Gravity
What occurs during a lunar eclipse?
The moon turns red and it goes in the earth shadow
What type of eclipse is pictured in the diagram.
Lunar
When the illuminated part of the moon appears to get smaller each night, the phases are said to be ___.
A waning
When the illuminated part of the moon appears to get smaller each night, the phases are said to be ___.
It is waxing
The average daily temperature in the northern hemisphere is coldest when ______.
It is coldest when the earth is farther from the sun
Because the sun’s rays strike different parts of the Earth at different angles throughout the year, we have ______.
Seasons
The seasons are the result of the ______ tilt of the earths ____ as it orbits the sun
23.5,axis
As the Earth revolves around the sun the Earth’s axis _________.
Pointed in the same direction
When is Earth’s axis tilted neither toward nor away from the sun?
Is in the fall
At the start of what season is the sun lowest in the sky?
Winter
What is true about the Moon’s rotation?
The moon rotates for every revaluation
When the northern hemisphere is experiencing winter the souther hemisphere is experiencing____.
Summer
A scientist observes the same crater on the surface of the moon everyday because ____.
The moon dose not rotate on its axis
What is the darkest part of the shadow called?
Umbra
The lighter part of the shadow is called the _______.
Penumbra
Why do we not have an eclipse every new and full moon?
Because of the tilt of the earthed axis
How many tides occur in a 24 hour period?
4
Tides are caused by the gravitational pull of the ___.
Moon
How many high tides occur in a 24 hour period?
2
What type of tides occurs when the high tides are highest and the low tides are lowest?
Neap tides
Analog waves can carry more data than digital waves. True or False
False
Analog wave are better for transmitting data because they do not degrade. True or False
True
Describe the difference between mechanical and electromagnetic wave
An electromagnetic wave are like phones and iPads, mechanical waves are like yelling
Speed = frequency X wavelength Frequency= speed divided by wavelength Wavelength = speed divided by frequency.
The wavelength, speed and frequency math
