3rd Grade MYF Spiral Review

Front

Why do people in warm areas wear white garments?

Back

To keep cool.

Front

What characteristic describes a rock that has been in the ocean for a long time?

Back

A rock that is smooth and round.

Front

What is the hardness scale used for?

Back

To identify minerals based on their ability to scratch other materials.

Front

If a mineral can scratch Apatite but can be scratched by Quartz, what is it?

Back

Orthoclase.

Front

Which soil type holds the most water?

Back

Clay, because it has poor drainage and its particles are the smallest.

Front

What is the main reason people wear light-colored clothing in hot climates?

Back

Light colors reflect sunlight, helping to keep the body cool.

Front

What happens to rocks in the ocean over time?

Back

They become smooth and rounded due to erosion.

Front

What is the Mohs hardness scale?

Back

A scale that ranks minerals based on their hardness from 1 (softest) to 10 (hardest).

Front

What is an example of a mineral that is softer than Orthoclase?

Back

Apatite.

Front

What is the relationship between particle size and water retention in soil?

Back

Smaller particles, like clay, hold more water than larger particles, like sand.