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5th grade science
| Term | Definition |
|---|---|
| What does most dense/more dense mean? | objects will sink in water |
| What does least dense/less dense mean? | objects will float in water |
| What is alternative energy? | energy made from RENEWABLE resources ex) hydroelectric (water), wind energy, solar (sun), biofuel, geothermal (heat/earth) |
| What is reflection? | the BOUNCING of light (LIGHT hits the surface then the light bounces off) |
| What is refraction? | the BENDING of light (light goes THROUGH the substance then changes direction) Ex. lenses, water, hand lens |
| What are the 4 magnetic metals? | SINC (steel, iron, nickel, cobalt) |
| What is the boiling point of water? | 100 degrees Celcius |
| What is the freezing point of water? | 0 degrees Celcius |
| What is thermal energy? | heat energy |
| What is a series circuit? | a circuit with only ONE loop; electricity can only go one way; if one light burns out, they ALL go out!!! |
| What is a parallel circuit? | a circuit with TWO OR MORE loops; electricity has two or more ways to go; if one light burns out, the rest stay lit |
| Light travels in a ......... | straight line |
| Force is ........ | a push or a pull; the more mass an object has, the more force it will take to move it |
| What does a spring scale measure? | the science instrument used to measure force |
| What are the STEPS for making FOSSIL FUELS (Coal, oil or natural gas) | 1) organisms died 2) buried under layers of sediment 3) HEAT FROM THE EARTH 4) COMPACTION 5) TIME |
| How is COAL made? | It is a fossil fuel made from ferns that grew in SWAMPS millions of years ago |
| How is OIL/NATURAL GAS made? | It is a fossil fuel made from microscopic sea organisms that lived in ANCIENT OCEANS millions of years ago |
| What are the STEPS for making sedimentary rock? | 1) sediment is deposited 2) sediment is compacted 3) sediment is cemented together 4) time |
| Renewable resources are........ | resources that can come back again; can be renewed ex) water, plants and animals, wind, sunshine, heat from inside the earth |
| Seasons are caused by................ | the earth's tilt and the earth's revolution around the sun |
| Evaporation is .......................... | a liquid changing into a gas or water vapor; heat energy causes evaporation |
| Condensation is ................... | water vapor or a gas changing into liquid water; caused by removing heat (cold) |
| Transpiration is............... | water vapor released from the leaves of plants |
| Runoff is............... | water running off the land |
| What is a non- renewable resources? | resources that CAN NOT come back |
| What is increase mean? | more of something |
| What does decrease mean? | less of something |
| What is overpopulation? | too many of any given organism in an area |
| What is vegetation? | another word for plants |
Created by:
Davis science vocab.
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