Grade 9 Science: Density
This worksheet covers fundamental concepts of density, including calculations, units, and factors affecting it, suitable for Grade 9 science students.
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Grade 9 Science: Density
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Read each question carefully and provide your best answer. Show all calculations where necessary.
1. Which of the following best defines density?
The amount of space an object occupies.
The amount of matter in an object.
Mass per unit volume.
The force of gravity on an object.
2. What are the standard SI units for density?
grams/liter (g/L)
kilograms/cubic meter (kg/m³)
pounds/cubic foot (lb/ft³)
grams/milliliter (g/mL)
3. The formula for density is mass divided by .
4. An object will float in a liquid if its density is than the liquid's density.
5. A block of wood has a mass of 120 grams and a volume of 150 cm³. Calculate its density. Show your work.
6. Explain why a small pebble sinks in water, while a large log floats.
7. Adding more mass to an object without changing its volume will decrease its density.
True
False
8. Temperature can affect the density of a substance.
True
False
Match each term with its definition.
9. Mass
a. The amount of space an object occupies.
10. Volume
b. The amount of matter in an object.
11. Density
c. Mass per unit volume.