2018 P6 SA1 Examination Suggested Answer Set

Errata Sheet

2018 P6 SA1 Examination Paper – Anglo Chinese School (Q29b)

Yes, Exhaled air is warmer than inhaled air. The inhaled air gains heat from our warmer body before it is being exhaled, causing the exhaled air to become warmer.

2018 P6 SA1 Examination Paper – Catholic High School (Q34a)

3. be less easily spotted by prey as the predators can only see the legs of bird A, which they may mistake for other objects/animals.

2018 P6 SA1 Examination Paper – Catholic High School (Q35b)

Step 3: This prevents electric current from passing through the circuit,
Step 4: causing the electromagnet to lose its magnetism…

2018 P6 SA1 Examination Paper – Catholic High School (Q36a)

Explain data: This shows that Material B is the most reflective. Most amount of light from the headlamp of the car would be reflected off the words on the signboard into the motorists’ eyes, enabling them to see the words most easily.

2018 P6 SA1 Examination Paper – Catholic High School (Q41)

The rubber band would possess more elastic potential energy, which is converted to more kinetic energy in the rubber band, which is then converted to more kinetic energy in the object, allowing it to travel even further.

2018 P6 SA1 Examination Paper – Methodist Girls’ School (Q38b)

A customer, who is opaque, would block light from the laser pointer when he enters the shop. Thus, the light sensor would not be able to detect any light from the laser pointer, causing the buzzer to sound and alert Mr Chow.

2018 P6 SA1 Examination Paper – Tao Nan School (Q39d)

When the fan is switched on, wind produced by the fan exerts a pushing force on the paper to the right, causing the stationary paper to start moving to the right. As the paper leaves the table, the gravitational force acting on the paper pulls it downwards, causing it to change direction and fall to the floor.

*Recall the 6 effects of forces.

2018 P6 SA1 Examination Paper – Methodist Girls’ School (Q30c)