Grade 3 · Science · Building Confidence
Free Science Review worksheet - version 9
Grade 3 science review matched to the learner's current level. This printable version includes 10 grade-appropriate questions and a separate answer sheet.
Science Review
Grade 3 · Building confidence · 10 questions · Version PG-1KRKE27-120T
1.Which gas do humans breathe in for respiration?
2.Which planet is known for its rings?
3.Which simple machine is a ramp?
4.What is the freezing point of water in Celsius?
5.Name the three main rock types.
6.What is an animal that eats plants called?
7.Which organ pumps blood?
8.What process lets plants make food using light?
9.What structure protects a plant cell but not an animal cell?
10.What is a food chain's first energy source?
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 9
- Which gas do humans breathe in for respiration?Oxygen
- Which planet is known for its rings?Saturn
- Which simple machine is a ramp?Inclined plane
- What is the freezing point of water in Celsius?0°C
- Name the three main rock types.Igneous, sedimentary, and metamorphic
- What is an animal that eats plants called?Herbivore
- Which organ pumps blood?The heart
- What process lets plants make food using light?Photosynthesis
- What structure protects a plant cell but not an animal cell?Cell wall
- What is a food chain's first energy source?The Sun
Worked example
Connect the question to an observable process or scientific model.
Common mistake
Selecting a familiar term without checking its meaning.
Helpful hint
Explain why your answer makes sense.