PSLE Science Made Simple: Light Reflection

What is the main purpose of Mr. Lim's experiment?

• To measure the temperature of different materials

• To find out how much light is reflected by different materials

• To test the durability of different materials

• To determine the color of different materials

What does a light sensor measure in the experiment?

• The temperature of the room

• The distance between the light source and the material

• The amount of light received

• The color of the light

What is the unit of measurement for light used in the experiment?

• Meter

• Centimeter

• Lux

• Watt

Which material reflected the most light in the experiment?

• Material C

• Material B

• All materials reflected the same amount of light

• Material A

Why is it important to conduct the experiment in a completely dark room?

• To ensure the light sensor only measures light from the torch

• To make the experiment more interesting

• To save electricity

• To prevent the materials from overheating

What is the change variable in Mr. Lim's experiment?

• The size of the room

• The intensity of the light source

• The distance from the light source

• The type of material

What is the purpose of bicycle reflectors?

• To help cyclists be seen at night

• To reduce the weight of bicycles

• To make bicycles faster

• To improve the aerodynamics of bicycles

Which material is most suitable for making bicycle reflectors?

• Material A

• Material B

• None of the materials

• Material C

Why should bicycle reflectors be made from the most reflective material?

• To reduce the cost of the bicycle

• To increase the speed of the bicycle

• To ensure the cyclist is seen clearly at night

• To make the bicycle look shiny

What is the cue template used for in choosing questions?

• To decide the color of the material

• To structure the answer logically

• To calculate the cost of materials

• To determine the weight of the material