2024 The Universe

Which is the largest structure that we will be studying in this unit?

• solar system

• planet

• universe

• galaxy

Which of these is never ending?

• solar system

• planet

• universe

• galaxy

Which of these would you use to measure distances in a galaxy?

• miles

• light years

• astronomical units

• inches

What was the first element present in our universe?

• boron

• hydrogen

• oxygen

What is the name of the main theory about the origins of the universe? (hint: you must use 4 words and capitalize the first letter of each word)

The theory that the universe began as a point and has been expanding since is called the _________________.

• Point theory

• Big l

• Big Bang Theory

• Big Boom Theory

All the stars we observe from Earth emit light that is shifted, to varying degrees, to longer wavelengths. This evidence is used to support the Big Bang Theory because it shows that stars we observe -

• are all older than our Sun.

• are made up of helium gas.

• use nuclear fusion to make light.

• are moving away from us.

The theory of the origin of the universe that is most popular among space scientists suggests that our universe originated how long ago?

• 10 – 20 centuries ago

• 10 – 20 thousand years ago

• 10 – 20 million years ago

• 10 – 20 billion years ago

Cosmic Microwave Background Radiation (CMBR) is the term used to describe the residual microwave radiation observed everywhere in the universe that seems to have no single source. The observation of CMBR is used as evidence of the Big Bang Theory because it is believed to be -

• the result of collisions between neighboring galaxies.

• particles of dust that have absorbed radioactivity.

• radiation left over from the rapid expansion of matter.

• light energy emitted from the source of the Big Bang.

The light we see from objects in the sky are from the past

• True
• False