Space and Astronomy Pretest HONORS

Front

What does it mean to look at distant galaxies and stars?

Back

You are looking back in time.

Front

According to Newton, gravity was a force. According to Einstein, gravity is a ________.

Back

curvature.

Front

What is a light-year?

Back

A measure of distance.

Front

What is gravitational lensing?

Back

Light bending around a massive object.

Front

Compared to clocks in a stationary reference frame, how do moving clocks run?

Back

slower.

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second.

Front

What is a black hole?

Back

A region of space where gravity is so strong that nothing can escape from it.

Front

What is the Big Bang Theory?

Back

The leading explanation about how the universe began, stating it started from a singular point and expanded.

Front

What is the difference between a planet and a star?

Back

A planet orbits a star and does not produce its own light, while a star generates light and heat through nuclear fusion.

Front

What is the role of gravity in the universe?

Back

It governs the motion of planets, stars, galaxies, and even light.