What is a sidereal day?

How long is a sidereal day?

What is a solar day?

How long is a solar day?

Why is a solar day longer than a side real day?

How long is a lunar month?

What is a solar eclipse?

What is a lunar eclipse?

Why are eclipses rare?

What planets can be seen with the naked eye?

Define 'Retrograde Motion'

True or false: Planets orbit the Sun at the same speed

Why do some planets sometimes appear to move towards us and sometimes appear to be moving away?

What is meant by 'declination'?

What is the celestial equator?

What is meant by 'right ascension'?

What is the 'vernal equinox'?

What is the celestial sphere?

Describe a converging lens

Describe a reflecting telescope

Power of a lens

Magnification of a lens

Refraction

What is chromatic aberration?

Advantages of mirrors

Draw a ray diagram

What is the focal length?

How can you estimate focal length when looking at a lens?

How does a telescope with two converging lenses work?
Draw a diagram

Explain how a converging telescope works.

Dispersion

What happens if you shine white light through 2 prisms?

What does a spectrometer contain?

What does a spectrometer measure?

What is a grating?

Why must mirrors be parabolic?

What is 'diffraction'?

What radiation does the atmosphere transmit (allow through)?

What radiation does the atmosphere absorb?

Calculating distance (in parsecs) equation

What is the parallax angle?

How long is a parsec?

Inverse Square Law

What is luminosity?

What does a stars luminosity depend on?

What is observed brightness?

What is a Cepheid variable?

Describe a Cepheid variable graph

Curtis's idea about the Milky Way

Shapley's idea about the Milky Way

Define: Comet

Define: Asteroid

Define: Planetary Nebula

Define: Nebula

Define: Supernova

Define: Pulsar

Define: Quasar

Speed of recession equation

What is speed of recession?

Complete the sentence:

,The more distance the galaxy, the _____________ its speed of recession.

Match these up:

Warm object High Frequency
Red Hot Object Low Frequency
White Hot Object Medium Frequency

How do atoms emit light?

How do atoms absorb light?

Symbol for positron

What is the 'strong nuclear force'?

What is 'electrostatic repulsion'?

Describe the Hertzsprung-Russell diagram.
(REFER TO IMAGE FOR ANSWERS)

What is the ISM?

In what 4 ways can you describe a gas?

Pressure eqaution

Describe the pressure-volume graph

Absolute Zero

Boyle's Laws

Charles' Law

How do stars form?
(5 steps)

Describe the structure of a star like our Sun

Describe the life of a star.

What is a neutron star?

What is a black hole?

What does SETI mean?

What is an exoplanet?

How can exoplanets be detected?

What is the Drake Equation (with explanation)