common assessment review

What is a galaxy?

• the planets

• a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction

• the moon and its planet

Reorder the following from smallest to largest.

• Local Group

• Universe

• Solar system

• Local Supercluster

• Galaxy

Earth is a ______ that orbits a ______ which we called the _______.

• planet; star; Milky Way

• star; planet; Solar System

• galaxy; sun; Universe

• planet; star; Sun

A collection of billions of stars is called a ______ and we live in the ______ ______ galaxy.

• solar system; Milky Way

• galaxy; Andromeda

• universe; Milky Way

• galaxy; Milky Way

What is at the middle of a Heliocentric system?

• Mars

• Moon

• Sun

• Earth

What is at the middle of a Geocentric system?

• Sun

• Neptune

• Earth

• The Universe

Built a telescope and made discoveries which changed astronomy; discovered 4 moons of Jupiter

• Galileo Galilei
• Aristotle
• William Herschel
• Claudius Ptolemy

ball of ice, rock, and frozen gases

• Meteor

• Asteroid

• Comet

Between which two planets would you find most asteroids?

• Mars and Jupiter

• Mercury and Venus

• Venus and Earth

• Uranus and Neptune

Where do comets originate from?

• our imagination

• the sun

• The Oort Cloud and Kuiper belt

• unicorn landia