Final Study Guide Real Flashcards
Give an example of a transverse wave
Ocean wave, wave on a string, or seisamic waves.
Different parts of a transverse wave
Crest is the highest point
Trough is the lowest point
Wavelength is the distance from crest to crest
Amplitude is the distance from resting point to crest
Give an example of a compressional wave
A sound wave
Give parts of a compressional wave
Compression is where particles get closer together.
Rarefaction is where the particles are farther apart.
How are wavelength and frequency and energy related?
They have shorter wavelength, higher frequency, more energy.
Your voice returns to you a few seconds after you speak. What property of waves does this demonstrate?
Reflection. It is the sound waves bounce off the wall and return to you.
What property of the sun controls the orbits of the planets
Gravity
What are the inner four planets known as?
Terrestrial planets
What is the order of the planets
Mercury , Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto
The sun goes through raindrops making a rainbow. What is this?
Refraction. Refraction is where the light waves bend and break into the visible light spectrum and that makes a rainbow.
The orbits of most planets are what shape
Elliptical
Objects in galaxies are held together by what
The gravitational pull.
What occurs on a lunar eclipse?
The moon passes through earth’s shadow and makes a lunar eclipse.
What phase of the moon does a lunar eclipse occur on?
A full moon
Order the phases of the moon
New moon Waxing crescent First quarter Waxing gibbous Full moon Waning gibbous Third quarter Waning crescent
When the moon gets smaller, what is it doing?
The moon is waning
When the moon gets bigger, what is it
The moon is waxing
When is the temperature in the North Pole coldest?
Sun’s rays hit the northern hemisphere at an indirect angle.
Because the sun’s rays hit the earth at different angles different parts of the year, what do we have?
Seasons
As the earth rotates the sun, the earth’s axis…….
Remains at the same angle and it is also pointed in the same direction
Seasons are caused by the whatangle of the earth’s what
23.5, axis.
What happens when the earth’s axis is not pointed towards or away from the sun?
Equinoxes
Sun lowest in the sky at the start of which season?
Winter
What is true about the moon’s rotation?
The moon rotates once for each revolution.
What is it in the Southern Hemisphere when northern hemisphere has winter?
Summer
Why do you always see the same side of the moon?
Moon rotates and revolves at a five degree angle.
What is the darkest part of a shadow
Umbra
What is the lightest part of a shadow?
Penumbra
Why is there no eclipses every new and full moon?
Because moon’s tilt on its orbit goes 5 degrees.
How many high tides are there each day?
2
How many low tides are there each day?
2
High tides highest, low tides are lowest
Spring tides.
Analog waves can carry more data than digital waves. True or false?
True
Analog waves are better for transmitting data because they do not degrade like digital waves do. True or false?
False
How to find wavelength, frequency, or speed of a wave
Speed is frequency x wavelength
Wavelength is speed / frequency
Frequency is speed / wavelength
What is visible light used for?
Visible light is used for vision.
What are x-rays used for?
To look at the insides of your body.
What are ultraviolet waves used for?
To clean medical stuff.
What are gamma rays used for?
To do radiation treatments.
What are infrared light used for?
To take images thermally.
What are radio waves used for?
To make your tv have a signal.
What are microwaves used for?
For your home WiFi or public WiFi
