IA2 Review Part 1 2021

Most scientists believe the Big Bang Theory explains which of the following questions?

• How our planets and moons formed

• How our universe began

• How the sun turns hydrogen into helium

• How fast light travels through space

As galaxies move away from our galaxy

a shift on the electromagnetic spectrum

(EMS) is noticed. This phenomena is

called _____________.

• redshift

• blueshift

• unshift

• blackshift

The universe is expanding!  This means that:

• all of the galaxies are spreading out.
• the universe must have started from a single point.
• the universe is cooling down.
• all of the above.

What is the correct order for the formation of our solar system?

• 1,2,3,4

• 2,3,4,1

• 2,4,3,1

• 1,3,4,2

According to the Big Bang Theory, which graph best represents the relationship between time and the size of the universe from the beginning of the universe to the present?

• Size decreasing as time increases
• Size and time both increasing
• Size does not change as time increases
• Size increases, then decreases as time increases

Which of the following is evidence of the Big Bang Theory?

• Cavemen heard a loud bang at the beginning of time.
• The universe isn't moving
• The universe is expanding
• The universe is getting smaller

Anything with ____________ also has a gravitational pull.

• mass

• size

• depth

• light

A force which tries to pull two objects towards each other is

• gravity

• inertia

• mass

• speed

the tendency of an object to resist a change in its motion

• acceleration
• inertia
• mass
• frame of reference

Because of inertia, a moving object will keep ________.

• at rest
• moving
• in one spot
• inertia