Question

Scientists predict that the Universe is expanding, but they cannot actually see the expansion happening.



Does each observation provide evidence that the Universe is expanding? Choose "Yes" or "No" for each observation.

Response area with 8 radio buttons within 4 groups.
Observation "Yes" or "No"
Hydrogen is the most common element in the Universe.

Yes

No

Earth is one of very few planets with known sources of liquid water.

Yes

No

The light that other objects in space emit appears redshifted from Earth.

Yes

No

There is a background layer of microwave radiation of uniform temperature throughout the Universe.

Yes

No

Answers

GPT-4o mini
Here are the responses to each observation regarding whether they provide evidence that the Universe is expanding:

Observation 1: Hydrogen is the most common element in the Universe.
**No**

Observation 2: Earth is one of very few planets with known sources of liquid water.
**No**

Observation 3: The light that other objects in space emit appears redshifted from Earth.
**Yes**

Observation 4: There is a background layer of microwave radiation of uniform temperature throughout the Universe.
**Yes**