The Moon
The origin of our planet
Earth's subsystems
The layers of the geosphere
Properties that can be used to identify minerals
100

The time it takes for the moon to revolve once around the Earth.

What is 27.32 days?

100

The third planet from the sun.

What is Earth?

100

The four main subsystems of Earth are sometimes called...

What are spheres?

100

The areas that separate each layer of the geosphere.

What are discontinuities?

100

Some minerals have crystals with recognisable shapes. 

What is crystal habit?

200

The different portions of the Moon that we see. 

What are the phases of the Moon?

200

The star at the centre of the solar system, formed 4600 million years ago. 

What is the Sun?

200

The gaseous layer of Earth.

What is the Atmosphere?

200

The thin layer of the geosphere which covers the surface of the Earth.

What is the crust?

200

The colour of the dust produced by crushing a mineral.

What is streak

300

The moon gets in between the Earth and the Sun. 

What is a solar eclipse?

300

The only planet in our Solar System with water in all its three states. 

What is Earth?

300

The layer of Earth that contains water in three states: liquid, gas and solid. 

What is the Hydrosphere?

300

The layer of the geosphere made of peridotite (a type of rock).

What is the mantle?

300

A minerals resistance to scratching. 

What is hardness?

400

The Earth gets in between the Sun and the Moon. 

What is a lunar eclipse?

400

The circles of materials that surrounded the Sun. 

What are Swirls?

400

The solid part of the Earth.

What is the Geosphere?

400

The centre layer of the geosphere mostly made of iron. 

What is the core? 

400

The way each mineral reflects light. 

What is lustre?

500

They occur as a result of the gravitational pull of the Moon. (hint: sea levels)

What are tides?

500

Larger celestial bodies formed by materials colliding.

What are planetesimals?

500

The layer of the Earth where life occurs. 

What is the Biosphere?

500

Rock that has been made liquid by extreme heat. Mostly found in the outer core.

What is Molten?

500

The way a mineral breaks (e.g. smooth, irregular, cubes and sheets). 

Cleavage

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