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WorksheetsMIKAY Q3B SCIENCE HEAT
Total questions: 23
Worksheet time: 23mins
It is defined as the transfer of thermal energy . It can be transferred to another material area body that has cooler temperature .
(a)
True or False
Heat can be transferred from hot objects to cold objects .
(a)
True or False
Once heat is transferred it may cause a change in phase or the state of the substance .
(a)
True or False
Heat is transferred from one object to another untill both of them have the same temperature.
(a)
Heat can be transferred by____, _____, _____.
(a)
It is the transfer of heat which can be mostly observed in solid materials.
(a)
happens when heat travels between objects that are in direct contact with each other.
(a)
Tell whether conduction , convection or radiation
A metal spoon in a hot cup chocolate drink becomes hot because of ? - (a)
Tell whether conduction , convection or radiation
Touching a heated casserole . (a)
True or False
Conduction is a more evident materials that let the heat flow easily .
(a)
Conductors of heat materials ( memorize )
spoon
pots
forks
(a)
Materials are called (a) if they do not transfer heat by conduction and if they can be used to insulate convecting current .
Examples of insulators ( memorize )
wood
cotton
plastic
(a)
It is the transfer of heat involving fluids such as liquids and gases .
(a)
It is the transfer of heat across space .
(a)
Examples of convection : ( memorize )
land and see breezes
boiling water
hot air balloons
refrigerators
air conditioners
(a)
Example of radiation ( memorize )
transfer of heat from the sun to earth
bonfires
microwave ovens
x-ray imaging
hairdryers
(a)
Too much exposure to extreme heat will cause harm .
True or false
(a)
Explain the convection process in boiling water . ( memorize )
when water is boiled , the water moves in roughly circular patterns because of convection. This motion iod because oif density differences resulting from temperature differences inside and outside the pot.
(a)
Why we should not wear dark clothes in summer ? ( memorize )
answer : Because dark clothes absob more heat which then makes you feel hotter.
(a)
Activities and tasks using heat ( memorize )
cooking
ironing clothes
boiling water
(a)
Activities and tasks using heat
(a)
Precautionary to prevent effects of extreme heat . (MEMORIZE )
1. If you go outside the house look for a place to cool down .
2. on hot days make sure to drinkl plenty of water
3. Try to do more work during the coolest time
4. do not go near fire and do not play with materials that can easily catch fire
5. When someone cooking in the kitchen do not touch object use in cooking
6. Turn on light bulbs are hot
7. use sun block when going out on sunny day.
(MEMORIZE )
(a)
