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ROCKS_TYPES OF ROCKS_G7B

Lan Vu

Created on March 7, 2022

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Transcript

2- Type of rocks

1- Rock

index

3- Quiz

4- Conclusion

5- Fun facts

wow

ROCKS TYPES OF ROCKS

G7B Science

Start!

definition of rock

What is rock?

What is rock?

A rock is a solid collection of mineral grains that grow or become cemented together. Some rocks are large while others are small. Small rocks are called pebbles. Every rock is made up of one or more minerals.

Are rocks always solid?

Rocks are always solid, aren't they?

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vs

Is chalk a type of rock?

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02

TYPES OF ROCKS

3 main types

Video

IGNEOUS ROCKS

Get an ice tray. Fill it with water and put it in the freezer. After an hour, show your students that an igneous rock is like a cube of ice. It's originally melted, then hardens after being put in the freezer. It's cool when you take it out.

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SEDIMENTARY ROCKS

The various layers of the cake come together after baking in the oven.This is similar to how sedimentary rock is formed.

METAMORPHIC ROCKS

The example of an omelet for metamorphic rocks. The egg is mixed with various ingredients and then cooked. The egg experiences heat and pressure from the flames of the stove, which enables it to turn into an omelet.

Chemical components

Rhyolite is light-coloured or white – this is a clue that the rock contains a lot of silica (more than 70%) and not much iron or magnesium.

03

QUIZ

Check what you have observed

Let's play!

SUMMARY about FEATURES

metamorphic

igneous

sedimentary

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How rocks are formed?

  • Igneous rocks are formed by crystallization and solidification of a rock melt.
  • Sedimentary rocks are formed chiefly by the deposition in the water of weathering and erosion products of pre-existing...
  • Metamorphic rocks are formed by recrystallization of both igneous and sedimentary rocks caused by heat and pressure within the Earth’s crust.

FUN FACTS

Fact 1

Fact 3

Why are some lava rocks red and others black?

Quartz is Used in all Watches, Radios, and Microprocessors, isn't it?

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Fact 2

Snakestone?

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Thanks!