PTS-Practice Test-1-YR4-SCIENCE

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A light bulb is connected to a battery by wires. What happens when a wire is removed from the light bulb?

• The wire produces electricity.
• The light bulb glows brighter
• The battery runs out
• The light bulb stops shining.

Look at the picture. Which letter shows the wire?

• A
• B
• C
• D

Which part of the circuit is the source of electricity?

• the bulb
• the battery
• the switch
• the buzzer

How does a switch in an electrical circuit turn on a light?

• it makes a spark.
• It breaks the electrical circuit.
• It makes electricity.
• It completes the electrical circuit.

Electrical wires are covered in plastic. The plastic...

• keeps the wire cool
• conducts heat
• is a good electrical insulator
• Is magnetic

Fatima tests 10 different objects to see if electricity will flow through them. She attaches each object to the circuit with clamps. The bulb will light if electricity flows through the object. What should Fatima do after she attaches each object to the circuit?

• make a prediction about the circuit
• add a second object to the circuit
• observe the change to the object
• record what happens to the bulb

Insiya wants to compare the mass of two small objects. Which is the best piece of equipment to use?

• 
• 
• 
• 

Ammar compares the time it takes for water to evaporate in two different places. He must choose the cups with the most similar amount of water. Which two cups should Ammar choose?

• 1 and 3
• 3 and 4
• 2 and 5
• 4 and 5

What unit is used to measure the melting point of a solid?

• litres
• centimetres
• degrees Celsius
• grams