Understanding Mass
A Grade 3 science worksheet to help students understand the concept of mass, how it's measured, and common units of measurement.
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Understanding Mass
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Read each question carefully and answer to the best of your ability. Good luck!
1. What is mass?
How much space an object takes up
How heavy an object is
The amount of matter in an object
How long an object is
2. Which tool is used to measure mass?
Ruler
Balance scale
Thermometer
Stopwatch
3. The standard unit for measuring mass in the metric system is the .
4. A feather has less than a rock.
5. You can use a to compare the mass of two objects.
6. Mass changes if you go to the moon.
True
False
7. A balance scale works by comparing an unknown mass to known masses.
True
False
8. Look at the image below. If you put an apple on one side of the balance scale and a feather on the other, which side would go down?

Use the words below to complete the sentences.
9. Mass is the amount of in an object.
10. For very small objects, we often use the unit .
11. A large watermelon would likely be measured in .