CBA #2 Review Stars, EMS, Seasons, Tides, Energy Transfer

Front

What does the conservation of energy principle state?

Back

Energy can be neither created nor destroyed.

Front

Which season occurs in the Northern Hemisphere during Position 1?

Back

Winter

Front

What is represented on the x-axis of an H-R diagram?

Back

Temperature.

Front

What type of galaxy has a shape similar to a football?

Back

Elliptical galaxy.

Front

What type of galaxy is characterized by a swirling structure?

Back

Spiral galaxy.

Front

What is the primary source of energy for the Earth?

Back

The Sun.

Front

What causes the tides on Earth?

Back

The gravitational pull of the Moon and the Sun.

Front

What is the difference between a solar and lunar eclipse?

Back

A solar eclipse occurs when the Moon blocks the Sun; a lunar eclipse occurs when the Earth blocks sunlight from reaching the Moon.

Front

What is the significance of the H-R diagram in astronomy?

Back

It classifies stars based on their luminosity and temperature.

Front

What are the four main types of galaxies?

Back

Spiral, elliptical, irregular, and lenticular.