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Heat - Coggle Diagram
Heat
Thermometers
used to measure the temperature of a body accurately
the 2 types of thermometer
labotory thermometer
measure things in experiment
The temperature it measure
-10c to 110c
clinical thermometer
measure temperature of a humans body
The temperature its measure
35c to 45c
how to read the temperature from a thermometer correctly
place your eye at the same level of the liquid
common units used to measure temperature
degree Fahrenheit
degree Celsius
parts of thermometer
scales
bulb
liquid
glass tube
how to measure the temperature of an liquid correctly
bulb of thermometer must be placed vertically
sources of heat
Produces heat
main source of heat
sun
examples of heat source
oil
petroleum
coal
natural gas
wood
Light sources that could also be heat source
using a light bulb
the sun
burning fuels
some electrical appliances can also generate heat
electric iron
toaster
water heater
rice cooker
difference between heat and temperature
a energy that can cause something to be
hot
cold
whats temperature
a measurement of the degree of hotness
effect of amount heat in a body
higher
body will have a higher temperature
lower
body will have a lower temperature-
the amount of matter in an object affects its temperature
effects of heat gain and loss
expansion and contraction of object
good and poor conductors of material
change in state of matter
change in temperature
gains heat
temperature increases
loses heat
temperature decreases
graph can use to show heat loss or heat gain in an object
it it shows a arrow going up
heat gain
if it shows a arrow going down
heat loss
heat flow
always flow from hotter colder
hotter--->colder
Object can become hot or cold by heat flow
object become
hot
by gaining heat
example
when a lit up torch is put under a beaker of water
direction of heat flow
lit up torch-->water
when the water gain heat it will gradually gain heat and become hotter
cold
by losing heat
example
when a hot coffee is left on the table
direction of heat flow
hot coffee--> cooler surrounding air
When the coffee loses heat it becomes cooler gradually
heat flow will always take place until everything is room temperature
examples
when a cup of coffee is left on the table
heat of the coffee-->surrounding air
until it is cooled to room temperature
when a can of cold soda is left on the table
heat from surrounding air-->can of cold soda
can of cold soda will gain heat until it is the same temperature of the surrounding air
Introduction to heat
whats heat?
A form of energy
not a matter
bunt can still feel its effects by touch