Rocks and Soil

Rocks can be sorted by

• Colour

• Texture

• Hardness

• All of the above

Dave's coin left a mark on marble, sandstone and talc, but didn't leave a mark on granite. What does this tell us about the granite?

• Granite is softer than all the other rocks

• Granite is hardest rock he tested

• The coin is too soft

What word describes a rock that water soaks into?

• translucent

• permeable

• flexible

• opaque

What word describes a rock that does NOT allow water to soak into?

• magnetic

• particle

• impermeable

• rigid

What is soil?

• Small particles of rocks.

• A home for worms.

• A mix of organic material (decayed plants and animals) and broken bits of rocks and minerals.

• None of the above

Which of these are types of soil?

• Clay

• Sandy

• Gritty

• Peaty

• Loamy

What are some important ways to describe rocks?

• by their size and shape
• by their color and patterns
• by their hardness and texture
• all of the above

Which statement explains why the soil in Egypt is different from the soil in Germany?

• The weather is calmer in Egypt than in Germany.
• Every type of soil has a different mixture of minerals, rocks, and humus. 
• The people in each country made their soil at different times in history.
• Germany's soil has rocks, but Egypt's does not. 

Which group of words lists the layers of soil from the highest to the lowest layer?

• subsoil, topsoil, bedrock
• ground, underground, deep underground
• topsoil, bedrock, subsoil
• topsoil, subsoil, bedrock

How do people use soil?

• for decoration
• to put in flower pots
• to grow food, for foundations, in waste management
• to grow food