Lesson Worksheet: Rocks and Their Properties Science • 2nd Grade
In this worksheet, we will practice identifying types of rocks based on their properties and their uses.
Q1:
The table shows the properties of some common rocks.
Which rock would be the best to use to make roof tiles?
| Chalk | Slate | Marble |
|---|---|---|
| Soft, permeable, and easy to crumble | Waterproof (impermeable) and can be split into thin pieces | Heavy, shiny, and waterproof |
- AMarble
- BChalk
- CSlate
Q2:
We can test how permeable a rock is by placing it in water. If the rock soaks up water, it releases air bubbles.
Which two rocks shown are permeable?
- AMarble and granite
- BChalk and sandstone
- CSandstone and marble
Q3:
Rocks can be classified according to a hardness scale. The hardest rocks cannot be scratched. Softer rocks can be scratched with a fingernail or a coin.
A class tested four rocks by scratching them with their fingernails, a coin, a knife, and a shard of glass. They recorded their results in the table shown.
| Rock | Fingernail | Coin | Knife | Glass |
|---|---|---|---|---|
| Talc | ✓ | ✓ | ✓ | ✓ |
| Rose quartz | ✖ | ✖ | ✖ | ✓ |
| Diamond | ✖ | ✖ | ✖ | ✖ |
| Apatite | ✖ | ✖ | ✓ | ✓ |
Order the rocks from hardest to softest using the results given.
- ADiamond, rose quartz, apatite, talc
- BTalc, apatite, rose quartz, diamond
- CRose quartz, diamond, talc, apatite
Q4:
David tested different materials for hardness by scratching them with his fingernail, a coin, a knife, and a shard of glass.
He figured out that diamond was the hardest rock tested. What evidence does he have to support his statement?
| Rock | Fingernail | Coin | Knife | Glass |
|---|---|---|---|---|
| Talc | ✓ | ✓ | ✓ | ✓ |
| Rose quartz | ✖ | ✖ | ✖ | ✓ |
| Diamond | ✖ | ✖ | ✖ | ✖ |
| Apatite | ✖ | ✖ | ✓ | ✓ |
- AThe diamond could not be scratched by the fingernail, coin, knife, or glass.
- BThe diamond could only be scratched by the fingernail.
- CThe diamond could only be scratched by the coin and the knife.
Q5:
Michael has four different types of rocks. He is testing the rocks to see which soak up water.
He slowly drops water onto each rock.
Which word is used to describe rocks that soak up water?
- ATransparent
- BPermeable
- COpaque
Q6:
This rock is called slate.
Complete the sentence: The texture of slate is , which means it has particles.
- Arough, big
- Bsmooth, big
- Csmooth, small
- Drough, small
Q7:
Which of these is not a good way of grouping rocks together?
- ABy smell
- BBy color
- CBy texture
- DBy durability
Q8:
The word permeable describes whether a rock allows water to soak through it. Complete the sentence: A rock that does not allow water to soak through is called .
- Apermeable
- Bimpermeable
- Cstrong
- Dabsorbent
Q9:
Complete the sentence: rocks like chalk can be easily scratched and crumbled if rubbed against a harder surface.
- AHard
- BSmooth
- CRough
- DSoft
Q10:
A class investigated how long it took different types of rocks to absorb the same amount of water.
The table shows the results.
| Type of Rock | Graphite | Chalk | Marble | Limestone |
|---|---|---|---|---|
| Time Taken for 10 mL of Water to Soak Through (Seconds) | 105 | 20 | 200 | 45 |
Which rock is the most permeable?
- AMarble
- BLimestone
- CChalk
- DGraphite
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