Universe Summative Review

Front

What is a light-year?

Back

A light-year is the distance that light travels in one year, used to measure vast distances in space.

Front

What is a nebula?

Back

A nebula is a large cloud of dust and gas in space, often the birthplace of stars.

Front

What is an orbit?

Back

An orbit is the curved path followed by a satellite as it revolves around an object, such as a planet around the Sun.

Front

What is a planet?

Back

A planet is any of the large celestial bodies that revolve around the Sun in the solar system.

Front

What type of telescope is used for observing distant galaxies?

Back

A reflecting telescope is used for observing far away objects, such as distant galaxies, nebulae, and star clusters.

Front

What is the solar system?

Back

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

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 universe?

Back

The universe is the vast expanse that contains all of space, time, matter, and energy, including galaxies, stars, and planets.

Front

What is a star?

Back

A star is a luminous celestial body made of plasma, generating energy through nuclear fusion in its core.

Front

What is the difference between a reflecting and a refracting telescope?

Back

A reflecting telescope uses mirrors to gather and focus light, while a refracting telescope uses lenses.