Astronomy & Meteorology Final Review

Front

What determines the life cycles of stars?

Back

The life cycles of stars are determined by their mass (size).

Front

Which of the following is NOT a characteristic of all planets?

Back

They have an atmosphere.

Front

How does the Moon's gravity affect Earth's ocean levels?

Back

The Moon's gravitational force 'pulls' on the oceans.

Front

What type of weather is typically associated with a LOW PRESSURE area?

Back

Precipitation.

Front

What two factors affect the magnitude of the force of gravity between two objects?

Back

Mass and distance.

Front

Define 'luminosity' in the context of stars.

Back

Luminosity is the total amount of energy emitted by a star per unit time.

Front

What is the difference between rotation and revolution in astronomy?

Back

Rotation is the spinning of a planet on its axis, while revolution is the orbiting of a planet around a star.

Front

What is a 'black hole'?

Back

A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

Explain the concept of 'tides'.

Back

Tides are the rise and fall of sea levels caused by the gravitational forces exerted by the Moon and the Sun.

Front

What is the significance of the 'Hertzsprung-Russell diagram'?

Back

The Hertzsprung-Russell diagram is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.