Tutorial World Primary 4
 
Name:_________________________ Date:_______________
 

Let's Find Out About Electricity (3.1)

A. Write the number of the correct answer in the brackets.
1. The battery is a ________ of electricity. ()
(1)
(2)
(3)
(4)

 
voltage
source
current
creator
2. Without electricity, your ________ will still work in the house. ()
(1)
(2)
(3)
(4)

 
telephone
doorbell
television
gas cooker
3. The casing of an electric plug is usually made of ________. ()
(1)
(2)
(3)
(4)

 
bakelite
plastic
rubber
plasticine
4. In an electric bulb, which parts are conductors?
(a) filament(b) wires (c) glass bulb (d) metal tip
()
(1)
(2)
(3)
(4)

 
(a) & (b).
(a) , (b) & (c).
(a) , (b) & (d).
All of the above.
5. Electricity cannot flow through ________. ()
(1)
(2)
(3)
(4)

 

water
silver
wood
aluminium
B. Write "T" for true and "F" for false.
1. Batteries cannot store electricity.
 
()
2. Electricity is a form of energy.
 
()
3. The brightness of a bulb depends on its voltage.
 
()
4. When a bulb fuses, it can be reused again after sometime.
 
()
5. Electrical energy can be converted into heat energy.

 

()
C. Fill in the blanks with the most suitable word.
1. The filament of an electric bulb is made of ____________.
 
2. The rubber material that covers bare wires is used as an ____________.
 
3. A battery has ____________ terminals.
 
4. When a circuit is ____________, electricity can flow through.
 
5. Batteries connected in __________ will result in a higher voltage.

 

©COPYRIGHT 1999 Strategic Thinking Business P/L Singapore ALL RIGHTS RESERVED