Grade 7 · Science · Unit 6 of 11
Rocks & Minerals
Minerals and the rock cycle
What your child practises
Practises how rocks and minerals make up Earth’s crust, how to tell them apart and how rocks change in the rock cycle.
Prince Edward Island Curriculum curriculum outcome: Earth’s Crust · identifying minerals and rocks, and following the rock cycle
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
Fossils are most often found in rock made of…
- melted magma
- layers of cemented sediment
- volcanic ash only
- cooled lava
layers of cemented sediment
Hint: Soft sediment can bury a dead plant or animal before it rots away.
Question 2
Why is mining ore sometimes harmful to the environment?
- It can destroy habitats and pollute water
- It always adds new soil
- It makes the air cleaner
- It cools the planet
It can destroy habitats and pollute water
Hint: Digging big holes changes the land.
Question 3
Which kind of rock forms when heat and pressure change an existing rock?
- metamorphic
- sedimentary
- igneous
- mineral
metamorphic
Hint: “Meta” means change.
Question 4
A table shows quartz: hardness 7, streak white, glassy lustre. What is quartz’s hardness?
- glassy
- white
- 3
- 7
7
Hint: Find the word “hardness” in the table.
Question 5
Melted rock that flows out onto Earth’s surface is called…
- magma
- clay
- lava
- sand
lava
Hint: Volcanoes erupt it.
Question 6
Which metamorphic rock is made when heat and pressure change limestone?
- marble
- sandstone
- granite
- pumice
marble
Hint: Its name is also used for statues and floors.