Grade 4 · Science · Unit 4 of 6
Rocks & Minerals
Igneous, sedimentary, metamorphic and fossils
What your child practises
Practises the three types of rock and how each forms, minerals and fossils, and how weathering and erosion wear rock down.
Manitoba Curriculum learning outcome: SCI.4.E.11, SCI.4.E.12 · types of rock and how they form, weathering and erosion of rock
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
Which tool would help you look closely at the grains in a rock?
- a clock
- a ruler only
- a hand lens
Show answer
a hand lens
Hint: A magnifier shows tiny details.
Question 2
Lava is…
- frozen water
- melted rock that has reached the surface
- a kind of soil
Show answer
melted rock that has reached the surface
Hint: Cooled lava becomes igneous rock.
Question 3
What is a mineral?
- a natural, non-living solid found in rocks
- a living plant
- a kind of water
Show answer
a natural, non-living solid found in rocks
Hint: Rocks are made of one or more minerals.
Question 4
Marble is an example of which kind of rock?
- igneous
- sedimentary
- metamorphic
Show answer
metamorphic
Hint: Marble is limestone changed by heat and pressure.
Question 5
Rock that forms when melted rock cools and hardens is…
- metamorphic
- igneous
- sedimentary
Show answer
igneous
Hint: Igneous rock starts as hot, melted rock.
Question 6
Why do rivers have smooth, rounded stones?
- Water rubs them against each other for a long time
- They grew round
- Someone polished them
Show answer
Water rubs them against each other for a long time
Hint: Erosion rounds stones.