Question

semester exam review 2

1. what evidence demonstrates the interaction between earth’s magnetic field and solar wind?
2. scientists determine the composition and temperature of stars _____.
3. scientists determine the composition and temperature of stars _____.
4. during the main - sequence stage, how is energy generated in a star’s core?
5. between 2001 and 2010, a nasa probe collected microwave data on the early universe. the image depicts 13.77 - billion - year - old temperature fluctuations (shown as color differences) in the early universe. what characteristic of the cosmic microwave background radiation (cmbr) provides evidence that the universe is expanding?

an image of the cosmic microwave background radiation (cmbr) is shown here
a. the cmbr arriving at earth has been blue shifted.
b. any microwave radiation is an indication of expansion.
c. the cmbr can be detected coming from all directions.
d. the hydrogen - to - helium ratio in the cmbr matches predictions made using the big bang theory.

Explanation:

Answer:

Auroras
Using spectroscopy
Using spectroscopy
Nuclear fusion
c. The CMBR can be detected coming from all directions.