CT Science Chapter 9 Motion and Energy
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50 terms
Terms | Definitions |
|---|---|
 The ability to do work | Energy |
| Energy that is stored Example: Ball on a hill | Potential |
| Energy stored in a stretched object Example: trampoline | Elastic potential energy |
| stored energy to an oject position | Gravitational potential energy |
| Energy that is stored in the chemical bonds of atoms and compounds | Chemical potential energy |
| form of energy that shows motion | kinetic energy |
| Energy that is not created nor destroyed it just changes | Law of Conservation of Energy |
| The act of casting back an image | reflection |
| the storing of energy without such as light without being reflected | absorbtion |
| the bending of light or sound when it passes from one thing to another | refraction |
| an object that reflects light | prism |
| when rainbow colors of invisible light can be seen using a prism | spectrum |
| the ability to do work | energy |
| the measurement of the energy used to perform a task | work |
| work equals | force times distance |
| Energy is measured in what unit | joules |
| Energy that is stored in the position or structure of an object is called what | potential energy |
| The 3 types of potential energy are | chemical (peanut butter sandwich) Elastic (slingshot) Gravitational (ball at the top of a hill) |
| What is the energy of motion | kinetic |
| Kinectic Energy can take many forms. 4 types of kinectic energy are | heat, lightwaves, sound waves and electricity |
| Energy cannot be created or destroyed. It only changes forms. it changes from potential to kinectic and back to potential. This is called | The Law of Conservation of Energy |
| These are examples of how energy can change form | Heat does work on a loaf of bread and changes into chemical energy. Electricity does work in an oven and changes into heat. Friction inside an engine turns some of the kinectic energy into heat. |
| Light is made up of what | ... |
| Light can | bend, bounce or get absorbed |
| When light bounces off a surface, this is called | reflection |
| when a light wave disappears into a surface | absorbtion |
| objects that let most of the light through | transparent |
| objects that let some of the light through and it blurs | translucent |
| objects that let little or no light through | opaque |
| When light hits a mirror, it obeys the law of | relection |
| the law that states that the angle of a light ray coming in equals the angle of the relected light bouncing off | Law of Reflection |
| A mirror that curves is called a | concave mirror |
| makes objects appear upside down example front of spoon | concave |
| A mirror that curves out is called | convex |
| makes objects appear smailler example back of spoon | convex mirror |
| An object in a glass of water appears to bend. However the object in not bending. The light is bending becuase | the light changed speed when it hit the water |
| When light waves change speed, they | refract |
| The bending of light | refraction |
| Lenses are used in eyeglasses. Lenses use refraction to shape images. What kinds of lens takes the light rays that pass through and bend them inward to a point | Convex lenses |
| are used in magnifying glasses. When light passes through the lense, the light spreads out in many directions making the object appear bigger. | Concave lenses |
| White light is refracted by raindrops in the sky and spreads out into a rainbow. You can also separate white light using a | prism |
| a cut peice of clear glass or plastic in the form of a triangle | prism |
| the band of color in a rainbow is called a | spectrum |
| The acronym used to remember the colors of the specturm is | ROY G BIV |
| name the colors of the specturm in order | red, orange, yellow, green, blue, indigo, violet |
| what color has the longest wavelength | red |
| what color has the shortest wavelegth | violet |
| a window is called a | medium |
| Examples of mediums | glass, plastic, paper, metal concrete, wood, water H2O, fabric |
| light can do 3 things when it hits a medium | bounce = relect soak = absorb bend = refract |
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