Question

scientists suggest that the universe is still expanding. which statement supports the claim made by the scientists?
○ the universe is 13.7 billion years old.
○ the galaxies in the universe are composed of dark matter.
○ the universe originated from a hot, dense point.
○ the galaxies in the universe are moving away from earth at high speeds.

Explanation:

To support the claim that the universe is still expanding, we analyze each option:

• "The universe is 13.7 billion years old" tells about the age, not expansion.
• "The galaxies in the universe are composed of dark matter" is about galaxy composition, not expansion.
• "The universe originated from a hot, dense point" is about the Big Bang origin, not current expansion.
• "The galaxies in the universe are moving away from Earth at high speeds" shows that galaxies are receding, which is evidence of the universe's expansion (as per the expanding universe theory, galaxies moving away from us implies the universe is expanding).

Answer:

The galaxies in the universe are moving away from Earth at high speeds.