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 ​

Placeholder

anymore. ​

Placeholder

acting on the toy is no longer overcome by ​

Placeholder

, causing the toy to fly ​

Placeholder

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

Air ________________

and _________________.

Fill in the Blanks

The bulbs were connected in

.

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

Fill in the Blanks

Check your answer:

The bulb must be connected to the circuit. The wire will be connected to the ___________ and __________ of the bulb. (write both answers in the blank)

​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

_{State the temperature shown on the thermometer.}

Fill in the Blanks

The turkey is a

. The turkey gains heat slowly from the hotter oven. So, heat gained by the turkey in two hours is not enough to raise the temperature to 160°C.

Revision on Elastic Spring Force

​What's the length of extension?

​

Fill in the Blanks

Length of extension is

​

​

Drag and Drop

Spring ​

Placeholder

is the stiffest as it has the ​

Placeholder

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 ​

Placeholder

.

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.

Labeling

Label the graph for spring X, Y and Z.

Drag labels to their correct position on the image

Z

Y

X

​

​Explain your answer.

Drag and Drop

Spring ​

Placeholder

is the stiffest as it has the ​

Placeholder

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 ​

Placeholder

. 

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.

Labeling

Label the graphs for springs X, Y and Z.

Drag labels to their correct position on the image

Y

Z

X

Multiple Choice

Which shows the correct diagram?

• 1

• 2

• 3

• 4

Fill in the Blanks

How does the number of cubes on the metal plate affect the length of the spring?

Drag and Drop

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

Placeholder

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

Placeholder

gravitational force acting on the cubes to overcome the ​

Placeholder

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

Placeholder

in length.

Drag these tiles and drop them in the correct blank above

gravitational force

more

elastic spring force

decreases

increases