ESA Universe Review

What is science?

• A way to learn the truth about a question in nature.

• A series of topics you are required to learn for a high school diploma or GED.

• A way to learn to do critical thinking that will help you in life.

• All of these answers.

Why do scientists practice the scientific method?

• It doesn't really work, they just do it out of habit.

• Because it is often the easiest way to do an experiment.

• To earn more money.

• To learn the truth about something in nature.

A hypothesis is an educated what?

What is peer review?

• When other scientist look at your hypothesis.

• When other scientist look at your conclusion and experimental setup for mistakes.

• When non-scientist read about your experiment.

• When non-scientist decide if your conclusion is true.

This word means everything on Earth and in space. Another word for it is Cosmos.

• Planet

• Galaxy

• Universe

• Solar System

What do we call a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

• Galaxy.
• Star.
• Nebula
• Black hole.

What galaxy are we in?

• Andromeda

• Milky Way

• Virgo A

• Large Magellanic Cloud.

The distance light travels in a year.

• A light kilometer.
• A parasec.
• An astronomical unit.
• A light year.

A cloud of gas and dust where new stars form.

• Black hole.
• Quasar.
• Planet.
• Nebula.

An exploding star that throws heavy elements into space.

• Nova.
• Nebula.
• Galaxy.
• Black hole.