Question

Which statements accurately differentiate between dark matter and dark energy? Select the two correct answers.
Responses

There is much more dark matter in the universe, by mass.
There is much more dark matter in the universe, by mass. - no response given

Dark matter is the cause of the acceleration of the universe, while dark energy is the cause of the formation of structures.
Dark matter is the cause of the acceleration of the universe, while dark energy is the cause of the formation of structures. - no response given

There is much more dark energy in the universe, by mass.
There is much more dark energy in the universe, by mass. - no response given

Dark energy is the cause of the acceleration of the universe, while dark matter is the cause of the formation of structures.
Dark energy is the cause of the acceleration of the universe, while dark matter is the cause of the formation of structures. - no response given

Dark matter is black, while dark energy cannot be seen.
Dark matter is black, while dark energy cannot be seen. - no response given

Answer 1

Correct answers:
- There is much more dark energy in the universe, by mass.
- Dark energy is the cause of the acceleration of the universe, while dark matter is the cause of the formation of structures.

Brief justification: observations (cosmic expansion, CMB, large-scale structure) indicate dark energy makes up ~68% of the universe's energy density and drives accelerated expansion; dark matter (≈27%) provides the extra gravity needed for galaxy and structure formation.