Science Quiz Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
What is evidence? | unbiased data gathered by direct observation |
What is soil? | portion of earth's surface of rock and humus which helps plants grow |
What is composition? | specific ingredients- general make-up of a material |
What is weathering? | wearing down of rocks by natural processes |
What is decomposing? | break down or decay living material |
What is organic matter? | material living organisms: plants, animals, leaves |
What are nutrients? | dissolve in water and are all absorbed by roots and is a certain |
What is humus? | rich topsoil that forms after decomposition, a good loom soil with 40% silt, 40% sand, and 20% clay |
What is fertilizer? | substance that supplies the soil with missing nutrients |
What is a native plant? | a plant that grows or lives in a particular region without direct or indirect human intervention |
What is contour plowing? | used on hills; plow across the hill, NOT UP AND DOWN; slows down water flow so less soil is washed away |
What are tree lines? | lots of trees planted to form a windbreak; slows down wind so it can't lift up soil and move it |
What is crop rotation? | changing type of crop planted in same location each year; reduces loss of same type of nutrients in the soil |
What are native PLANTS? | grasses and trees native to the area soil are best adapted to the environment; grow well and roots reduce erosion |
What is control? | standard to which experimental results can be compared |
What are the 3 main components of soil? | silt, clay, and soil |
What is the order, in greatest to least: the components of soil? | sand, silt, clay |
What are the individual pieces of sand called? | grains |
Can you see clay particles? | No, you need a microscope to see them. |
Different soils from different places have _________________ amounts of each of the above | different |
What are all of the layers of soils? | subsoil, bedrock, topsoil, parent material |
What are the layers of soil in order? | topsoil, subsoil, parent material, bedrock |
Why do we need organic matter? | We need it because bacteria and other microrganisms help break down and it eventually turns the chemicals into nutrients and nutrient help the soil. |
What was the Dust Bowl? | The Dust Bowl was 1930's natural disaster affecting many central states, removing soil, and depleted nutrients and water. |
Created by:
42josie
Popular Science sets