Heat — PHYSICS STD 7 — Question

A person is said to have fever if his body temperature is more than _________

A boy carrying a heavy school bag and standing still does ___________ work.

In hydroelectric dams, the kinetic energy of flowing water is transformed into___________ energy.

Sound is produced when a body ______.

When the lights of red, green and blue colours are mixed, __________ light is produced.

When a body covers equal distances in equal interval of ___________ in a specified direction, it is said to be moving with uniform velocity.

Radiant heat can easily pass through ___________ .

The S.I. unit of density is _______

The distance travelled by a body in unit time is known as its ____________

An electric fan converts electrical energy into ______ energy.