E1Astronomy Review

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. A moving object will keep moving unless acted upon by an external force.

Front

What is the universe?

Back

The universe is all of space and time, including all forms of matter, energy, planets, stars, galaxies, and the contents of intergalactic space.

Front

What does the Big Bang Theory propose?

Back

The Big Bang Theory states that the universe began with a tremendous explosion approximately 13.7 billion years ago, leading to the expansion of space.

Front

What is the purpose of a telescope?

Back

A telescope is an instrument used to observe distant objects in space, such as stars, planets, and galaxies.

Front

Which of the following is not a space rock?

Back

A star is not a space rock; it is a massive celestial body made of plasma.

Front

What is a planet?

Back

A planet is a celestial body that orbits a star, is spherical in shape, and has cleared its orbit of other debris.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the sun, develops a glowing coma and tail.

Front

What is an asteroid?

Back

An asteroid is a small rocky body that orbits the sun, primarily found in the asteroid belt between Mars and Jupiter.

Front

What is a galaxy?

Back

A galaxy is a massive system of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is the solar system?

Back

The solar system is a collection of celestial bodies, including the sun, planets, moons, asteroids, comets, and meteoroids, that are bound by gravity.