Volcanoes
6 free practice questions with explanations
PassNova has 6 free Kids Rocks & Soil practice questions on Volcanoes, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Volcanoes: example questions & answers
6 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
What is the hot, melted rock called that pours out of a volcano?
- AJuice
- BHoney
- CLava✓
- DMilk
Answer: Lava is red-hot melted rock that flows out when a volcano erupts.
When a volcano bursts and shoots out lava and ash, we say it does what?
- ASleeps
- BFreezes
- CMelts snow
- DErupts✓
Answer: When a volcano suddenly bursts out lava and ash, we say it erupts.
Melted rock deep underground, before it comes out of a volcano, is called what?
- AMagma✓
- BCream
- CMud
- DRain
Answer: Magma is the melted rock beneath the ground; once it erupts, we call it lava.
What happens to runny lava after it cools down?
- AIt becomes a cloud
- BIt hardens into rock✓
- CIt turns into water
- DIt floats into space
Answer: When hot lava cools, it hardens and becomes solid new rock.
What shape is a volcano often described as?
- AFlat like a pancake
- BLike a mountain with a hole at the top✓
- CSquare like a box
- DRound like a ball
Answer: Many volcanoes look like mountains with an opening at the top for lava to escape.
The grey, powdery stuff that puffs out of an erupting volcano is called what?
- AFlour
- BSugar
- CAsh✓
- DGlitter
Answer: Volcanoes puff out clouds of grey ash, which is tiny bits of rock and dust.