Prep for Test PT Science 9

What is the name of this part of a plant?

• Fruit

• Seed

• Petal

• Leaf

A light bulb is connected to a battery by wires.

What happens when a wire is removed from the light bulb?

• The light bulb stops shining.

• The wire produces electricity.

• The light bulb glows brighter.

• The battery runs out.

What is the colour of the wire?

• Black

• Silver

• Gold

• Red

Which part of the circuit is the source of electricity?

• dry cell

• the bulb

• 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

Mr L tests 10 objects to see if electricity will show through them.

He attaches each object to the circuit with clomps.

The bulb will light if electricity flows through the object.

What should Mr L do otter she connects 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

Mr Kato has three bowls filled with water and soap bubbles. He wants to see what happens if he adds sugar or salt to the bowls.

Based on Kato’s results, what is the best way to make good bubbles?

 

• add nothing

• add salt

• add sugar

• add salt and sugar

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

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

• 1 and 3

• 3 and 4

• 2 and 5

• 4 and 5