Final Flashcards
Give an example of a transverse wave
Ocean waves, waves on a string, seismic waves
Different parts of a transverse wave
Crest- highest point
Trough- lowest point
Wavelength- distance from crest to crest
Amplitude- distance from resting point to crest
Example of a compressional wave
Sound waves
Parts of a compressional wave
Compression- where particles are closer together
Rarefaction- where the particles are farther apart
How are wavelength and frequency and energy related?
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- 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
Order of the planets
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto
The sun goes through raindrops making a rainbow. What is this?
Refraction- the light waves bend and break into the visible light spectrum
The orbits of most planets are what shape
Elliptical
Objects in galaxies are held together by what
Gravitational pull
What occurs on a lunar eclipse
Moon passes through earth’s shadow
What phase of the moon does a lunar eclipse occur on
Full moon
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?
Waning
When the moon gets bigger, what is it
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, pointed in the same direction
Seasons are caused by the _ angle of the earth’s _
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
Rotates once for each revolution
