Name __________________
Hard as a Rock
ROCK
SAMPLES
FINGERNAIL
PENNY
NAIL
Rock 1
Rock 2
Rock 3
Rock 4
Rock 5
Rock 6
Label your rocks 1-6. Test each one and check which item
scratched the rock. Answer the following questions:
1. How many rocks had scratch marks from your fingernail?
2. How many rocks had scratch marks from the penny?
3. How many rocks had scratch marks from the nail?
4. I know that rock number ____ is the hardest because
5. I know that rock number ____ is the softest because
WCPSS, 2013