Exam Science Unit3 The Universe Junior6 Part2

What is the type of the bulb in light bulb?

What is the metal used in light bulb?

Light bulb consists of filament and glass bulb and———

The filament made of ——–

Why the filament is don’t melt at high temperature?

Argon gas is ———–

———protect the filament life time

The glass bulb made of ——-?

——–carries the light bulb in an upright position

——–connect the light bulb to the electricity

Spiral base has ——–to connect the lamp to the electric current

The main source of light now?

The fluorescent lamp consists of ——–

Each lip in the lamp contain ——-

The resistance arm is measured in ————

The effort force measure by———

Which of the following levers save effort

In the ——– class levers, the arm of force may be equal to the arm of resistance

The ——–class lever always hasn’t a mechanical benefit.

The force is not equal to the resistance in the ——class lever

——-have a mechanical benefit.

The type of levers which always has mechanical benefit is the — —

When the length of the force arm equals 2.5 meter and the length of the resistance arm equals 1.5 meter so———-

Fulcrum effected by———-effort

The mathematical equation that’s explains the relation between——–

Resistance arm is ——–

The law of levers state that ———-

When the effort force is———the resistance force , so the is lever doesn’t conserve effect.

The first class lever differs that of the second class lever in ——-

Fishing tool and tweezers are considered as——-class levers.

See-saw is from —–class lever

Tweezers are used to ———

——— Always saves effort.

The distance between the effort force and fulcrum

When the effort force is——— The resistance force, so this lever conserve effect.

When the effect force equal to 2 and the force equal the arm equal cm, The resistance force equal to 9 What is the resistance arm equal?

The type of levers which always has a mechanical benefit is ———.

Which of the following levers doesn’t save effort?

The effort arm equals 5 cm and the resistance arm equal 10 cm so ——-

The ——— class levers are very important in our life although they don’t conserve effort

In the ———- class levers the force is smaller than resistance force

The arm of force is the distance between…

Which of the levers derived is used to enlarge the distance ?

Which of the following levers moves force from one place to another ?

Soda water opener is a ………..