Lesson 13: Leslie Cube RP

Question 1

What are the four different surfaces on a Leslie’s cube?

Answer 1

1.) Shiny metallic.
2.) White
3.) Shiny Black
4.) Matt Black
may be different on the exam question

Question 2

What are the 5 MAIN steps to The Leslie’s Cube RP?

Answer 2

1.) Fill the Leslie’s Cube with hot water (heated in kettle.)
2.) Place the Leslie Cube on heat proof mat.
3.) Use a ruler to measure a specific distance from each surface to the infrared detector.
4.) Point an infrared detector at each of the four surfaces and record the amount of infrared radiation emitted from each surface.
5.) Record temperature/ infrared radiation emitted of each surface every min for 10 mins using the infrared detector

Question 3

What is a control variable in this RP?

Answer 3

• Distance between each surface on Leslie’s Cube and infrared detector.

Question 4

From the four surfaces: shiny metallic, shiny black, matt black and white, order them from the surface that emitts the least infrared radiation to the surface that emitts the most infrared radiation….

Answer 4

1.) Shiny metallic.
2.) White.
3.) Shiny black.
4.) Matt black.

Question 5

If we don’t have an infrared detector, what can we use instead?

Answer 5

• Thermometer (but has a lower resolution.)

Question 6

Which has a greater resolution: an infrared detector/ digitial thermometer? Which would be better to use?

Answer 6

• Infrared detector.
• Infrared detector = better to use because has higher resolution.

Question 7

What is a safety precuation (for the hot water) from The Leslie’s Cube RP?

Answer 7

• Don’t make water too hot.
• Complete the experiment whilst standing up.