U5 Universe Test Re-Do

Front

Which spectral class does our star, the sun, belong to?

Back

G

Front

As galaxies move away from our galaxy, a shift on the electromagnetic spectrum is noticed. This phenomenon is called _____________.

Back

redshift

Front

In the death of a massive star, gravitational collapse is so complete that no energy or matter can escape. This is called a _______

Back

black hole

Front

Red stars are the _____________.

Back

coolest

Front

What type of galaxy is this?

Back

Irregular

Front

What is the term for the shift of light to longer wavelengths as objects move away from the observer?

Back

redshift

Front

What is a black hole?

Back

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

Front

What are the characteristics of a G-type star?

Back

G-type stars, like the Sun, are yellow in color and have surface temperatures between 5,300 and 6,000 K.

Front

What is the difference between a spiral galaxy and an elliptical galaxy?

Back

Spiral galaxies have a flat, rotating disk with arms, while elliptical galaxies are more rounded and lack the distinct arms.

Front

What is a neutron star?

Back

A neutron star is the remnants of a supernova explosion, composed almost entirely of neutrons.