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29 Cards in this Set
- Front
- Back
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What is the formula for finding the volume of a regular shape? Find the volume of a box that is 12 cm long, 6 cm wide, and 4 cm high.
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V = lwh or Volume = length times width times height. 288 cm3 |
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Name the three most common states of matter. Give an example of each. |
Solid – table, Liquid – water, Gas - oxygen
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Describe the movement of molecules in each state of matter. |
Solid – vibrate or shake in place Liquid – can move around and slide passed each other Gas – can move about very freely
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What is an atom? |
The smallest, or most basic, unit of matter |
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What is an element? |
Contains only one type of atom |
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What is a compound? Give at least one example. |
consists of two or more types of atoms bonded together. Example – salt |
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What is a mixture? Give at least one example. |
a combination of different things that stay the same individual thing when mixed and can be separated physically. Example: fruit salad |
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Name 3 ways to separate a mixture. |
Magnets, evaporation, filtering |
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Illustrate the particle arrangement for each state of matter. |
gas liquid soild |
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What are physical changes? Give two examples. |
A change in any physical property of a substance, not the substance itself. Examples: shaping a piece of clay, or painting a house |
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What are chemical changes? Give two examples. |
A change of one substance into another. Examples: burning wood or iron rusting |
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What is an insulator? Give an example.
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Material that does NOT allow electricity to flow easily. Rubber.
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What is a Conductor? Give an example.
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Material that does allow electricity to flow easily. Metal
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What is the difference between current electricity and static electricity?
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Current electricity is a continuous flow of electric charge while static electricity is a buildup of electric charge.
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In a series circuit, if one appliance stops working, what will happen to the other appliances in the same circuit? Draw and label a series circuit.
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They will stop working because they share the same path to the voltage source.
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In a parallel circuit, if one appliance stops working, what will happen to the other appliances in the same circuit? Draw and label a parallel circuit.
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The other items will still work because each has its own path to the voltage source.
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What is the purpose of a circuit breaker when the circuit is overloaded?
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To open the circuit and turn off the power.
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Soil is a mixture of what four materials? |
Weathered rock particles, organic matter, water, and air. |
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What is humus? What color does it make soil? |
The decayed organic matter in a soil.-makes soil black |
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What is a soil horizon? |
A layer of social with properties that differ from those layers below it. |
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Describe the A horizon |
the upper layer of soil and is commonly called topsoil. |
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Describe the B horizon |
lies just below A horizon. it has little organic matter and is usually brownish or reddish in color. |
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Describe the C horizon |
is the deepest layer of soil. it consist of the largest and least-weathered rock particles. |
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Why does tropical, arctic, desert, and temperate regions have different types of soil? |
because they are located in different areas of the world, and certain climates in certain areas. |
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Why is tropical soil unsuitable for growing most crops? |
because of the heavy rains wash away materials leaving only a thin surface layer of humus. |
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Describe sediments |
are materials that settle out of water or air. |
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How are sedimentary rocks formed? |
sedimentary rocks develop from layers of sediments that build up on land and underwater. |
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What 2 things does the formation of sedimentary rocks depend on? |
weathering and deposition |
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Where are the oldest layers found in sedimentary rocks? |
they are normally found within the oldest layers on the bottom. |
