3rd Grade Science MYF Spiral Review

Front

What happens to rocks in the ocean over time?

Back

Rocks can become smooth and round due to the constant movement of water and sand.

Front

What type of soil has very large particles and feels rough?

Back

Sand is a type of soil with large particles that drains water quickly.

Front

Why do scientists study fossils?

Back

Scientists study fossils to learn about living things that no longer exist.

Front

What is the hardness scale used for?

Back

The hardness scale is used to determine how hard a mineral is by seeing what it can scratch.

Front

What mineral can scratch Apatite but can be scratched by Quartz?

Back

Orthoclase is the mineral that can scratch Apatite but can be scratched by Quartz.

Front

What is a characteristic of sedimentary rocks?

Back

Sedimentary rocks are often formed from particles of sand, silt, and clay that have been compacted together.

Front

What is the difference between igneous and sedimentary rocks?

Back

Igneous rocks are formed from cooled magma or lava, while sedimentary rocks are formed from particles and organic material.

Front

What is humus?

Back

Humus is the dark organic material in soil that is formed from the decay of plant and animal matter.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by wind, water, or ice.