Flashcards in Waves and Astronomy Deck (38):
What happens when the wave length increases?
The frequency decreases
Number of complete waves per second
Units for frequency
Units for wave length
Units for sound
A force that makes a body follow a curved path.
Speed of sound through air
Speed of sound through water
Speed of sound through steel
The force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
The study of space.
The Big Bang Theory
A theory in which the universe started at one point billions of years ago. It was a violent event.
A wave in which vibrations vibrate forward and backward in the same direction as energy..
A wave that vibrates at right angles.
Compression in a longitudinal wave
IIIIIIIIIIIIIIIIIIIII (As the wave pushes in)
Rarefaction in a longitudinal wave
I I I I I I I I I I I (Space between waves)
Examples of longitudinal waves
Sonar and Seismic waves (earthquakes)
Speed (m/s) equation
Distance travelled (m) / time taken (s)
Speed of light
3 x 10^8 m/s
A collection of billions off stars that orbit around a central point.
What do telescopes tell us about our universe?
It's ever expanding
The inner region of a shadow cast by an opaque object. For example between the moon and Earth experiencing the total phase of an eclipse.
Pieces of roc and dust travelling into the Earth's atmosphere with heat.
How have telescopes changed?
They can now see more as the objective lens is magnified therefore being able to take more light in.
Why are telescopes better on satellites rather than on Earth?
Disadvantages of satellite telescopes
Expensive and hard to repair
Distance from Proxima Centauri to the sun
4.25 light years
The distance that light travels in one year.
Planet order acronym
My very easy method speed up names.
A large region of asteroids that lies between the orbits of Mars and Jupiter.
An icy small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.
Distance from one side of the Milky way to the other?
The first lunar phase, when the Moon and Sun have the same ecliptic longitude.
A cloud of dust, helium and hydrogen
When the moon passes in front of the sun, blocking it or a portion of it from view.
When Earth passes between the sun and the moon, causing it to be partly or completely covered by Earth's shadow.