Unit 7 Science

What is specific heat?

the speed at which a substance changes its temperature

high specific heat number is

slower temperature change

low specific heat number is

faster temperature

solidifacation/freezing

changing from a liquid to a solid

melting/fusion

changing from solid to a liquid

heat of fusion

the solidifacation or melting of a substance based on the gain or loss of heat/energy

heat of vaporization

the vaporization condensation of a substance based on the gain or loss of heat/energy

electromagnetic spectrum

different types of electromagnetic energy are determined by different wavelengths

UV

ultraviolet

IR

Infrared

when waves go through material it may

reflect or bend

waves may

reflect or bounce off of material

waves can be

scatted, refracted or reflected in many direction

waves are able to be

transmitted or passed through material

waves can be taken or

absorbed

what are the substances in the atmosphere that causes the reflection of sunlight

clouds, volcanic ashes, pollution

what does the ozone layer do?

protects life on earth, absorbs harmful UV rays from the sun

where is the ozone layer located?

Stratosphere

can clouds absorb and reflect?

yes

what does the clouds do with the UV rays during the day?

it reflects the UV rays

what does the clouds reflecting the UV rays during the day do to the temperature?

it makes the temperature cool down

what does the clouds do with the IR rays at night?

it absorbs the IR rays

what does the clouds absorbing the IR rays do to the temperature?

it makes the temperature warm up

what is a good absorber?

a dark color and a rough texture

what are good reflectors?

a light color and smooth texture