Christmas Review

Front

What is the primary component of the Sun?

Back

Hydrogen

Front

What is the net force if two forces of 3 N and 2 N act in the same direction?

Back

5 N

Front

What is the term for the phenomenon where light from distant galaxies shifts to longer wavelengths?

Back

Redshift

Front

In which direction will an object move if the net force is directed to the left?

Back

Left

Front

What theory explains the origin of the universe?

Back

Big Bang Theory

Front

What is the electromagnetic spectrum?

Back

The range of all types of electromagnetic radiation.

Front

What is the difference between redshift and blueshift?

Back

Redshift indicates an object is moving away, while blueshift indicates it is moving closer.

Front

What is the significance of the Big Bang Theory?

Back

It explains how the universe began.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter.

Front

What is the force of gravity?

Back

The attractive force between two masses.