Muktangan Exploratory Science Centre
Earth Science Lab Worksheet-1, 7th Std
Types of rocks and Identification Of Rocks
Name:
Day: Friday
Date:
Batch:
Types of Rocks:The three main types, or classes, of rock are sedimentary, metamorphic, and
igneous and the differences among them have to do with how they are formed.
Identification of rocks: Observe the different samples of rocks and record the
observations in the table below.
Observation Table:
Sample no. -1
HardnessColourTextureLustreOdourMagnetic/nonAcid ReactionStreak TestDoes it Scratch glasstype-
Sample no. - 2
HardnessColourTextureLustreOdourMagnetic/nonAcid ReactionStreak TestDoes it Scratch glasstype-
Sample no. - 3
HardnessColourTextureLustreOdourMagnetic/nonAcid ReactionStreak TestDoes it Scratch glasstype-
Sample no. - 4
HardnessColourTextureLustreOdourMagnetic/nonAcid ReactionStreak TestDoes it Scratch glasstype-
Sample no. - 5
HardnessColourTextureLustreOdourMagnetic/nonAcid ReactionStreak Test-
Sample no. - 6
HardnessColourTextureLustreOdourMagnetic/nonAcid ReactionStreak Test-
Does it Scratch glasstype-
Does it Scratch glasstype-
Rock Cycle: Fill the missing steps in the following Rock Cycle
Tick The correct answer:
1. When rocks are affected by weathering and erosion, they change into which of the
following?
Lava
Magma
Sediment
2. When heat and pressure are applied to a sedimentary rock, it changes into
which of the following?
Igneous rock
Metamorphic rock
Sediment
3. When melting of a metamorphic rock occurs, it changes into which of the
following?
Igneous rock
Magma
Sediment
4. When sediment is compacted and cemented, it changes into which of the
following?
Igneous rock
Metamorphic rock
Sedimentary rock
5. When magma is cooled, it changes into which of the following?
Igneous rock
Metamorphic rock
Sedimentary rock