The Expanding Universe Answers

0 verified answers

Free Preview

Which statement accurately describes how the understanding of the Doppler effect is applied to the study of galaxies?

It helped Hubble measure the velocities of galaxies using shifts in light.

It was used to monitor galaxy motion through changes in sound waves.

It indicates a galaxy moving toward Earth through red shift.

It indicates a galaxy moving away from Earth through blue shift.

Free Preview

Which correctly lists the two elements that make up the empty space in the universe?

ice and debris

debris and dark matter

dark matter and dark energy

dark energy and dust

Which two objects in space formed from the huge disk of ice and debris beyond the outer planets?

Pluto and comets

comets and Neptune

Neptune and a solar nebula

a solar nebula and planetesimals

Which is currently the most supported theory about the future of the universe?

The universe could remain exactly as it is today.

The universe may continue to expand.

Stars could burn out, causing the universe to become dark and cold.

Gravity could pull galaxies back together, causing a reverse of the big bang.

Did you find these answers helpful?

More from this Course