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WorksheetsHEAT TRANSFER AND SOUND
Total questions: 23
Worksheet time: 9mins
It is the main source of heat of the earth.
sun
moon
star
light bulb
This method of heat transfer happens when two objects come in direct contact with each other.
convection
radiation
conduction
The amount of heat in a body or the degree of hotness or coldness is called _____________.
heat
energy
temperature
A method of heat transfer that depends upon the movement of the molecules in the material that is heated.
convection
radiation
conduction
The reflected sound is called an (a)
This refers to the loudness or softness of sound.
pitch
intensity
quality
Too much exposure to noise can lead to ____________.
muteness
deafness
blindness
Sound with an intensity of 120 decibels is barely heard.
TRUE
FALSE
Piano, guitar and harp produce sound when they are ___________.
struck
blown
plucked
Trumpet, flute and whistle produce sound when they are ___________.
struck
blown
plucked
Cymbals, drums and xylophone produce sound when they are ___________.
struck
blown
plucked
When an object vibrates slowly, its pitch is low.
TRUE
FALSE
What do we call an unpleasant sound?
(a)
Which is the most extreme effect of overexposure to the sun's radiant energy?
dehydration
intensity
sun burn
heat stroke
What method of heat transfer is involved in the drying of fish under the sun?
convection
radiation
conduction
What method of heat transfer is involved in roasting lechon?
convection
radiation
conduction
What method of heat transfer is involved in frying an egg on a pan?
convection
radiation
conduction
It is the principle used in heating systems like electric heater and fireplace.
convection
radiation
conduction
Which is an example of conductor?
cooking pot
rubber
wood
plastic
How does heat energy flow?
from cold to hot objects
from hot to cold objects
from hot to hot objects
from cold to cold objects
The science of sound waves and their production, transmission, reception and control is called (a) .
It is the back and forth movement of molecules.
(a)
For 3 points, what do we call the instrument that measures temperature.
(a)
