Why Is the Universe Expanding

question 22

Multiple Choice

Why is the universe expanding?

• A) The energy from all the stars is heating the universe, making it expand like a gas that is heated.
• B) Spacetime itself is expanding, carrying the galaxies (or superclusters of galaxies) with it.
• C) The universe is not expanding-it is the Galaxy that is getting smaller, making the universe seem bigger and bigger.
• D) An infinitely dense clump of matter exploded, sending the galaxies (or superclusters of galaxies) hurtling out through space.

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Definitions:

Cross-sectional Research

A research method that involves analyzing data from a population, or a representative subset, at a specific point in time.

Development Over Time

Refers to the continuous process of change and growth that occurs in organisms or systems across different periods.

Cognitive Domain

Refers to the mental processes involved in learning, including knowledge acquisition, comprehension, and thinking.

Intellectual Development

The growth and change in cognitive abilities and processes, including thinking, problem-solving, and decision-making, throughout the lifespan.