8th grade Universe /Space test review

Front

What color of light has the LONGEST wavelength and the lowest frequency/energy?

Back

Red light has the longest wavelength and the lowest frequency/energy.

Front

What might a supergiant explode and become?

Back

A supernova.

Front

What force keeps the planets orbiting around the sun?

Back

Gravity is the force that keeps the planets in orbit around the sun.

Front

Which planets are classified as gas giants?

Back

Jupiter, Saturn, Uranus, and Neptune are the gas giant planets.

Front

Why do all of the planets orbit the sun rather than Earth?

Back

The sun has more mass than Earth, which is why all planets orbit it.

Front

What is the definition of a supernova?

Back

A supernova is a powerful and luminous explosion of a star.

Front

What is the main sequence in stellar evolution?

Back

The main sequence is a stage in a star's life cycle where it fuses hydrogen into helium.

Front

What are the characteristics of gas giant planets?

Back

Gas giants are large planets with thick atmospheres, primarily composed of hydrogen and helium.

Front

What is the role of gravity in the solar system?

Back

Gravity is the force that governs the motion of celestial bodies, keeping them in orbit.

Front

What is the difference between a white dwarf and a supernova?

Back

A white dwarf is a small, dense star that remains after a star has exhausted its nuclear fuel, while a supernova is the explosive death of a massive star.