Transmission of heat is not possible through
iron
copper
aluminium
wood
Which helps in the manufacture of utensils ?
sand
clay
plastic
To observe solar ellipse people uses
naked eye
power glasses
black glasses
none of these
Heat transfer from one place to another is
conduction
convection
radiation
transmission
Which of the following helps to make the houses cool?
grass
Which process helps the transmission of heat in solids ?
convention
isolation
An example of artificial light is
sun
stars
glow worms
bulb
Light cannot pass through
opaque substance
transparent substance
translucent substance
liquids
Wood, coal are the
sources
heat
sources of heat
effects of heat
An example of insulator is
