a group of students is using big bang theory to explain how the universe formed. according to big bang…
a group of students is using big bang theory to explain how the universe formed. according to big bang theory, how did the universe form? move the events into order in the table. event 1 2 3 4 first stars form first galaxies form hydrogen atoms form universe begins expanding
Answer
Explanation:
Step1: Initial event in Big - Bang
The Universe begins expanding right after the Big - Bang singularity. So the first event is "Universe begins expanding".
Step2: Formation of light elements
After expansion, hydrogen atoms form as the first stable elements. So the second event is "Hydrogen atoms form".
Step3: Formation of stars
Gravity causes hydrogen to clump together and form the first stars. So the third event is "First stars form".
Step4: Formation of galaxies
Stars then group together to form the first galaxies. So the fourth event is "First galaxies form".
Answer:
| 1 | 2 | 3 | 4 |
|---|---|---|---|
| Universe begins expanding | Hydrogen atoms form | First stars form | First galaxies form |