Big Bang

High school (ages 12+)
Space & Astronomy

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/big-bang

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the proposed early phase?Cosmic inflation: a period of accelerated expansion in the earliest moments
2. What is the Big Bang theory?The Big Bang theory says the universe started from a tiny, extremely hot and dense point and then expanded, creating space itself. It explains how stars, galaxies, and everything we see grew over billions of years.
3. When did the Big Bang happen?Scientists say the Big Bang happened about 13.787 billion years ago, when the universe was much smaller and hotter than it is now.

Singularity: A theoretical point of infinite density and temperature from which the universe is thought to have originated.
Big Bang Nucleosynthesis: The process by which the first light atomic nuclei were formed in the early universe.
Dark Energy: A mysterious force believed to be causing the accelerated expansion of the universe.