PSLE 2022 SC & ESF

SC PSLE 2022

Reorder

______________ --> ________________ + ________________ + sound energy

• Elastic Potential Energy

• Kinetic Energy

• Gravitational Potential Energy

1

2

3

• 1
• 2
• 3

​Answer

Drag and Drop

The rubber band untwists as the toy flies over the ground. At C, the rubber band has completely untwisted and does not possess ​

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anymore. ​

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acting on the toy is no longer overcome by ​

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, causing the toy to fly ​

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until it reaches the ground at D.

Drag these tiles and drop them in the correct blank above

elastic potential energy

Gravitational force

upward forces

lower

​Answer

Draw

Draw the graph for (c).

Note:

• - Draw in Diagram 2.

- Starting point should be the same.

​Answer

Fill in the Blanks

Fill in the Blanks

Draw

One bulb blows, the other will still be lit --> parallel arrangement of bulbs

Both bulbs will only light up when the switch is closed. --> switch is beside the battery

​1. Bulbs are connected with wires on the:
- metal tip
- metal casing

2. Bulbs L and Bulbs R are connected in parallel to each other.

3. Switch is connected to the battery in series (switch is beside battery)

4. Closed circuit (no gap)

5. Note: There should be no short circuit, which means that there should be no wire without bulb connected to the battery.

​

​

​

​

Fill in the Blanks

Fill in the Blanks

Revision on Elastic Spring Force

​What's the length of extension?

​

Fill in the Blanks

​

​

Drag and Drop

Spring ​

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is the stiffest as it has the ​

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weights (3 weights) pulling it down but it extends by the same length. This means that if each spring is pulled by the same amount of weight, Spring X will extend the ​

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.

Drag these tiles and drop them in the correct blank above

X

most

least

Y

Z

Draw

Draw the graph for the springs.

Clue:

1. When there is no weight (force), there is no extension.

2. Spring X is the stiffest, so X will extend the least for the same amount of weight.

Spring Z is the least stiff, so Z will extend the most for the same amount of weight.

Labelling

Label the graph for spring X, Y and Z.

Drag labels to their correct position on the image

Y

X

Z

​

​Explain your answer.

Drag and Drop

Spring ​

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is the stiffest as it has the ​

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weights (3 weights) pushing it down but it compresses by the same length. This means that if each spring is pushed by the same amount of weight, Spring Z will compress the ​

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. 

Drag these tiles and drop them in the correct blank above

Z

most

least

X

Y

Draw

Draw the graphs for the springs X, Y and Z.

Labelling

Label the graphs for springs X, Y and Z.

Drag labels to their correct position on the image

Z

Y

X

Multiple Choice

Which shows the correct diagram?

• 1

• 2

• 3

• 4

Fill in the Blanks

Drag and Drop

As the number of cubes on the metal plate increases, the ​

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acting on the cubes increases. Thus, there will be ​

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gravitational force acting on the cubes to overcome the ​

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acting on the spring. This causes the spring to be compressed more and ​

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in length.

Drag these tiles and drop them in the correct blank above

gravitational force

more

elastic spring force

decreases

increases