Basic Science Knowledge Challenge

Basic Science

Test your understanding of fundamental concepts across biology, chemistry, physics, and Earth science, suitable for middle school learners.

science middle school biology chemistry physics earth science factual easy

7 Questions Easy Ages 10+ Aug 9, 2026

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About this Study Set

This study set covers Basic Science through 7 practice questions. Test your understanding of fundamental concepts across biology, chemistry, physics, and Earth science, suitable for middle school learners. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 7 questions from the Basic Science Knowledge Challenge study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What gas do plants absorb from the atmosphere for photosynthesis?

A Oxygen
B Nitrogen
C Carbon Dioxide
D Hydrogen

2 Which of the following is a state of matter with a definite shape and a definite volume?

A Liquid
B Gas
C Plasma
D Solid

3 What organ is responsible for pumping blood throughout the human body?

A Lungs
B Brain
C Stomach
D Heart

4 What is the primary source of energy for Earth?

A The Moon
B Distant Stars
C The Sun
D Volcanoes

5 What is considered the basic building block of all living things?

A A Molecule
B An Atom
C A Cell
D A Tissue

6 What is the process called when liquid water turns into water vapor and rises into the atmosphere?

A Condensation
B Precipitation
C Evaporation
D Runoff

7 Which gas do humans breathe in from the air to stay alive?

A Nitrogen
B Oxygen
C Carbon Dioxide
D Methane

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