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Key Idea: When light shines on an object, the object typically gets warmer.

Students should know that:

  1. Light bulbs, fire, and the sun are sources of light.
  2. The longer a light shines on an object, the warmer the object can get.

 

Boundaries:

  1. At this level, students are not expected to know that the reason objects get warmer when light shines on them is because energy is transferred to them by light. The words “transfer” or “radiation” are not used in items.
  2. Only light sources that give off visible light are used in assessment items. Students are not expected to know that all objects give off “light” as electromagnetic radiation. 
  3. Contexts of assessment items are limited to those that do not involve changes of state.
Frequency of selecting a misconception

Misconception
ID Number

Student Misconception

Grades
4–5

Grades
6–8

Grades
9–12

NGM032

Only hot objects can transfer energy in the form of electromagnetic radiation (AAAS Project 2061, n.d.).

N/A

32%

30%

NGM031

Only objects that are glowing can transfer energy in the form of electromagnetic radiation (AAAS Project 2061, n.d.).

N/A

33%

24%

RGM043

The amount of energy transferred by radiation does not depend on the brightness of the light (AAAS Pilot test 2013).

9%

11%

15%

NGM036

Only the sun transfers energy in the form of electromagnetic radiation (AAAS Project 2061, n.d.).

N/A

10%

9%

RGM059

Light transfers energy only if the "warming effect" of the light can be detected. Thus, sunlight might transfer energy but a florescent light does not.

13%

7%

9%

Frequency of selecting a misconception was calculated by dividing the total number of times a misconception was chosen by the number of times it could have been chosen, averaged over the number of students answering the questions within this particular idea.