3rd Grade Science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is it called when weather (moving water, wind and ice) breaks down rocks into smaller and smaller pieces. | Weathering
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| What is it called when weathered materials (soil) is moved (washed away) by wind and water? | Erosion
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| What is a mixture of weathered rock (clay, sand and silt), minerals, water, air and humus? | Soil
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| What are nutrients created from decaying plants and animals in the soil called? | Humus
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| What is like vitamins for plants in the soil? | Humus
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| What helps mix soil and create holes and tunnels in the soil for air, water and the roots of plants? | Worms
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| What is waste from a person's home or yard that can be saved to help make soil rich in humus? | compost
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| What is it when you take care of resources and do NOT waste them? | Conserve
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| What are the four different types of soil? | Sand, Silt, Clay and Loam
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| What type of soil has large, rough particles, is very loosely packed, does not hold water well, and is not strong enough to hold heavy plants upright? | Sand
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| What type of soil feels like flour, can be dusty and does not have any nutrients in it? | Silt
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| What type of soil is sticky, thick, holds too much water and is packed very tightly? | Clay
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| What type of soil holds water well, has a lot of nutrients and is best for growing plants? | Loam
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| What are the three layers of soil? | Topsoil, Subsoil, and Bedrock
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| What is the top layer of soil, can have humus and is best for growing plants? | Topsoil
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| What is the second layer of soil and has no humus. | Subsoil
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| What is the bottom layer of soil, has large pieces of solid rock, and is the layer where new soil begins? | Bedrock
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
irwinsnc
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