Question 1 of 8
Which gas makes up most of Earth's atmosphere?
Nitrogen makes up about 78% of Earth's atmosphere.
QUIZ
Science Quiz
This science quiz focuses on foundational ideas that help explain the world around us. Read each question carefully and use what you know about matter, living systems, energy, and Earth.
Question 2 of 8
What is the chemical symbol for sodium?
Na is the standard chemical symbol for sodium.
Question 3 of 8
Which force keeps planets in orbit around the Sun?
Gravity provides the attraction that keeps planets in orbit.
Question 4 of 8
What is the basic unit of life?
A cell is the basic structural and functional unit of living organisms.
Question 5 of 8
Which state of matter has a fixed volume but no fixed shape?
A liquid keeps a fixed volume but takes the shape of its container.
Question 6 of 8
What does DNA store?
DNA carries genetic information used in the development and functioning of organisms.
Question 7 of 8
Which layer of Earth is mostly liquid metal?
Earth's outer core is primarily liquid iron and nickel.
Question 8 of 8
What instrument measures temperature?
A thermometer measures temperature.
How to use this page
Take the quiz without looking up the answers, then review the short explanations. The goal is to understand the topic as well as measure your score.
- Read all four choices before selecting.
- Use the explanation after each result to reinforce the idea.
- Try again later instead of relying on immediate repetition.
Frequently Asked Questions
Are these questions designed for beginners?
Yes. They focus on broadly accessible knowledge and explain the answer so the activity can also be used for learning.
What does my score mean?
Your score reflects your performance on these questions only. It is not a general measure of intelligence or ability.