Question

Directions: Please provide the best answer for each question. You may use your Geoscience

Notebook and all of your notes and activities.
1. True or False
2. True or False
3. True or False
4. True or False
The universe is still expanding today.
The light from galaxies moving away from an observer on Earth is blue-
shifted.
The length of light waves from galaxies that are moving towards an
observer are getting shorter.
The first elements to form after the Big Banger were hydrogen and carbon.

Answer 1

The universe is expanding, but light from galaxies moving away from Earth is red-shifted. Light waves from galaxies moving towards an observer are getting longer. Hydrogen and helium were the first elements to form after the Big Bang.

Step-by-step explanation:

1. True

2. False

3. True

4. False

The universe is still expanding today, which makes statement 1 true. However, the light from galaxies moving away from an observer on Earth is red-shifted, not blue-shifted, making statement 2 false. On the other hand, the length of light waves from galaxies that are moving towards an observer is getting longer, not shorter, making statement 3 false. Lastly, the first elements to form after the Big Bang were hydrogen and helium, not hydrogen and carbon, making statement 4 false.

Learn more about The expanding universe and light's properties