NATALIE'S LIGHT SCIENCE ENERGY!!!!!! ;):):):):):):):):):):):)

DEFINE + examples

100

frequency

the number of wavelegths that pass through a given point each second 

2

conductors 

are matirals, such as metals, through which thermal energy does not move easily 

ex. metals 

300

transparent object 

allow nearly all light to pass through 

ex. clear window glass 

400

translucent object 

allow some light to pass through, but we can not see through them clearly 

ex. frosted glass 

300

thermal energy 

the sum of energy of all the moving particles in an object 

other

100

do light waves make up part of the electromagnetic spectrum, yes or no 

yes

2

describe how fiber optics work 

is another kind of technology that uses light. They are made of a long thin, transparent strands mad eof plastic or glass.

300

most substances _________ or _________ in size when they gain thermal energy and warm up

expand or increase

---------    ---------

400

example: on a hot day, ice cream changes from a 

solid to a liquid 

300

heat can

cause matter to change in size 

extra important define + examples (extra facts)

100

opaque object 

some materals do not allow any light to pass through 

ex. wood, metals  

2

refraction 

is the binding of the light waves as they move from one notel to another 

300

most substances contract when they _____ 

lose thermal energy 

400

heat also can cause a change in____________

matters physical form or state 

300

reflection

occurs when light waves bounce off an object 

important things you need to know

100

if 2 objects have the same temperature, which one has the most thermal energy 

the one with most particles/matter 

2

that is the electromagnetic spectrum

a rang with all electromagnetic waves, that you can and can't see with the human eye

300

how are we able to see the specific colors of objects 

because the point on the object will absorb all other colors so it reflects the point color 

400

thermal energy depends on the 

particles moving

300

explain why refraction happens

the differences in the way light waves bend causes the pencil to appear in two pieces 

OTHERS (facts that could not fit in the other columns)

100

temperature describes how 

hot or cold matter is 

2

the main colors of light energy are _____,_________,____________,___________,_______________,________________,_______________

red

orange

yellow

green 

blue

indigo

violet

300

describe the way convection works in a pot on the stove

The heated water from the bottom of the pot rises to the top, and the cooler water from the bottom sinks to the bottom. As the water in the pot moves, it transfers thermal energy by convection.

400

radiation can also happen when ____________such as _____ is _______

matter     air        present 

300

energy from the _____ moves through___________________________by________

Sun     millions of kilometers of space            radiation