Sand and pebbles
6 free practice questions with explanations
PassNova has 6 free Kids Rocks & Soil practice questions on Sand and pebbles, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Sand and pebbles: example questions & answers
6 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
Sand is made of lots and lots of tiny bits of what?
- ABroken-up rock and shells✓
- BTiny sponges
- CSnowflakes
- DSugar crystals
Answer: Sand is countless tiny pieces of rock and shell worn down over a long time.
What do we call the small, smooth, rounded stones often found on a beach?
- AMarbles made of glass
- BBricks
- CPebbles✓
- DIce cubes
Answer: Pebbles are small stones made smooth and round by the moving water.
Why are beach pebbles usually smooth and not sharp?
- APeople polish each one
- BThey are born smooth
- CThey are made of soap
- DWater has worn them down over time✓
Answer: Waves roll pebbles around for years, slowly wearing them smooth.
Which is smaller: a single grain of sand or a pebble?
- AA grain of sand✓
- BA big boulder
- CThey are the same size
- DA pebble
Answer: A grain of sand is tiny, much smaller than a pebble.
Where would you most likely find lots of sand?
- AIn a fridge
- BOn a beach or in a desert✓
- COn the ceiling
- DInside a book
Answer: Sand is found in huge amounts on beaches and in sandy deserts.
Over a very long time, what can big rocks slowly break down into?
- ACandyfloss
- BWater and steam
- CSand and tiny pieces✓
- DMetal and gold
Answer: Wind, water, and time can break big rocks into smaller pieces and even sand.