Back to Library

Cosmology for Young Explorers

Cosmology

An introduction to the origins, structure, and evolution of the universe.

space science universe

15 Questions Easy Ages 9+ Apr 21, 2026

Practice Test PDF Answer Key PDF

Choose a Study Format

Quiz

Test your knowledge with multiple-choice questions and instant feedback.

Flashcards

Flip through cards to review terms, definitions and key concepts.

True or False

Quickly decide if statements are true or false to reinforce understanding.

Match Game

Race against time to match questions with their correct answers.

Study Guide

Read through all topics and answers as a comprehensive study reference.

Listen Mode

Listen to questions and answers read aloud — great for audio learners on the go.

Embed This Study Set

Add this interactive study set to your website or blog — all 6 formats included.

<div data-quixly-id="2047"></div>
<script src="https://www.quixlylearn.com/assets/embed/widget.js"></script>

Learn more about embedding →

About this Study Set

This study set covers Cosmology through 15 practice questions. An introduction to the origins, structure, and evolution of the universe. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 15 questions from the Cosmology for Young Explorers study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the name of the theory that describes the rapid expansion of the universe from a hot, dense point?

A The Big Bang Theory
B The Steady State Theory
C The Solar System Model
D The Galactic Shift Theory

2 Which galaxy is home to our Solar System?

A Andromeda
B Milky Way
C Triangulum
D Sombrero

3 What is the most abundant element in the universe?

A Oxygen
B Carbon
C Hydrogen
D Iron

4 What invisible substance is thought to make up about 27% of the universe and provides extra gravity?

A Dark Energy
B Dark Matter
C Stardust
D Plasma

5 What is the force that pulls objects with mass toward each other?

A Friction
B Magnetism
C Gravity
D Static Electricity

6 What do scientists call the age of the universe?

A 4.5 billion years
B 13.8 billion years
C 100 million years
D 1 trillion years

7 What instrument is best known for observing distant galaxies and the early universe?

A Microscope
B Thermometer
C Space Telescope
D Compass

8 What mysterious force is causing the expansion of the universe to accelerate?

A Dark Energy
B Solar Wind
C Black Holes
D Nuclear Fusion

9 What is a massive collection of gas, dust, and billions of stars called?

A Planet
B Asteroid
C Galaxy
D Nebula

10 What is the name for a region in space where gravity is so strong that not even light can escape?

A Supernova
B White Dwarf
C Black Hole
D Pulsar

11 What type of star is our Sun?

A Red Giant
B White Dwarf
C Yellow Dwarf
D Neutron Star

12 What do astronomers call the cloud of gas and dust where new stars are born?

A Nebula
B Comet
C Asteroid Belt
D Moon

13 What is the closest star system to our Solar System?

A Sirius
B Alpha Centauri
C Betelgeuse
D Polaris

14 Which of these is the term for the study of the entire universe?

A Geology
B Biology
C Cosmology
D Meteorology

15 What do we call the leftover radiation from the early universe that can be detected everywhere in space?

A Cosmic Microwave Background
B Solar Flare
C Auroral Light
D Radio Waves

📱

Study on the go

Download Quixly and access all study formats on your phone — anywhere, anytime.