science words - February
Terms
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- Amplitude
- The energy in a sound wave
- Buoyancy
- The upward force of water, another liquid, or air that keeps things afloat.
- Chemical Change
- A change that produces new matter with different properties from the original matter. Ex. Copper acetate
- Color
- Produced by the effect of waves of light striking the retina of the eye.
- Contract
- To shrink or decrease in size, as matter does when it cools.
- Energy
- The ability to do work, either to make an object move or change matter.
- Expand
- To increase in size, as most matter does when it is heated.
- Filter
- A tool used to separate things by size.
- Force
- Any push or pull that makes an object start moving, stop moving, speed up, slow down, or change direction.
- Fossil Fuel
- A substance such as coal or oil that formed millions of years ago from the remains of plants and animals. These fuels are nonrenewable resources, and when burned for energy, are major sources of pollution.
- Frequency
- The number of times a sound source vibrates in one second.
- Gas
- A state of matter that does not take up a definite amount of space and has not definite shape.
- Heat
- The movement of thermal energy from warmer to cooler objects.
- Kinetic Energy
- The energy an object has because it is moving.
- Light
- Form of energy that acts on the retina of the eye...light can be reflected, refracted, and absorbed.
- Liquid
- A state of matter that takes up a definite amound of space but has not definite shape.
- Mass
- The amount of matter making up an object.
- Matter
- Anything that has mass and takes up space.
- Mixture
- Two or more types of matter mixed together but keep their own properties.
- Motion
- Change of position or place; movement; moving.
- Opaque
- Completely blocking light from passing through an object
- Physical Change
- A change that begins and ends with the same type of matter.
- Pitch
- The highness or lowness of a sound as determined by its frequency.
- Potential Energy
- Energy that is stored or waiting to be used, giving an object the future ability to do work.
- Reflection
- The bouncing of light waves off a surface.
- Refraction
- The bending of light as it passes from one transparent material to the next.
- Speed
- The distance traveled in a certain amount of time.
- Shape
- The outward contour or outline, form, figure, appearance.
- Size
- Amound of surface or space a thing takes up
- Solid
- A state of matter that has a definite shape and takes up a definite amount of space.
- Sound Wave
- An area of bunched-up and spread-out air particles that moves outward in all directions from a vibrating object.
- Translucent
- Letting only some light through, so that objects on the other side appear blurry, cloudy.
- Transparent
- Letting light through, so that objects on the other side can be seen clearly.
- Vibration
- The back and forth motion of an object.
- Weathering
- The process of breaking down rocks into smaller pieces that create sediment.
- Work
- The use of force to move an object a certain distance.