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smateacher science 7

science ACTS testing

Energy The ability to do work
Barometer The instrument for determining the pressure of the atmosphere
Humidity The amount of moisture in the air
Variable A part of the experiment that can be changed to test a difference in outcome
Acid rain Rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain su
Chemical change A chemical change produces a new substance. Examples of chemical changes include combustion (burning), rusting of an iron pan,
Physical change Physical changes are concerned with energy and states of matter. A physical change does not produce a new substance. Changes in state or phase (melting, freezing, vaporization, condensation, sublimation) are physical changes. Examples of physical changes
Food web community of organisms where there are several interrelated food chains
Ecology the branch of biology dealing with the relations and interactions between organisms and their environment.
Heat energy Form of energy which transfers among particles in a substance by means of kinetic energy of those particles (hot pan full of kinetic energy, if you touch will result in heat to your skin)
What is the boiling point of water 212 degree Fahrenheit, 100 deg. Celcius
What is freezing point of water 32 deg F., 0 deg. C
What are steps of the scientific method Make observation and Formulate a hypothesis 2 . collect data through experiments with variables 3. Organize data and draw conclusions. If data supports hypothesis collect more data over let period to make hypothesis a law
grams measure Weight
Volume is measured in Liters or milliliters, measurement of volume
Distance is measured in the metric system in Millimeters (1/1000 of a meter), centimeter (1/100th of a meter), decimeter (1/10th), meters, dekcameter (10 meters) or kilometers (1000 meters)
Kinetic energy The energy an object possesses due to its movement. A heavier object traveling at the samevelocity has more kinetic energy
We breathe in Oxygen
We breathe out Carbon dioxide
Soluble A substance able to be dissolved, especially in water, ie. Sugar
Glucose Excess food stored in a plant, form of sugar
Water cycle Water is evaporated from the earth into the atmosphere and condenses in the cloud layers. The clouds than release rain, precipitation back to the earth.
Organism An individual, animal, plant or single celled life form
Photosynthesis Process by which plants absord light rays from the sun through chlorophl in the plant and converts the light energy and carbon dioxide from the atmogphere and converts it into food and energy. The plant then gives off oxygen into the atmospherer
Density Mass divided by volume
Created by: smateacher