Question

1 multiple choice 5 points activity a question 1 observe: press play. how long does it take the kernel to pop? 15 secons 83 seconds 27 seconds 61 seconds 2 multiple choice 5 points activity a question 7 draw conclusions: when the popcorn kernel popped, was it heated by light (radiation) or hot air from the flashlight? the popcorn was heated by the flashlight the popcorn was heated by the light it absorbed (radiation)

Explanation:

Question 1

This question likely relates to an experiment where the time for a popcorn kernel to pop is observed. Typically, in such experiments (related to heat transfer and popcorn popping), the time for a kernel to pop when heated (e.g., by a flashlight as a heat source) is often around 61 seconds (this would be based on the experimental setup's observation, where 15s is too fast, 27s is still fast, 83s is too slow, and 61s is a reasonable time for a kernel to pop under typical heating for such an activity).

Flashlights emit light (radiation) as their primary means of transferring energy. Flashlights don't produce significant hot air to heat the popcorn kernel from a distance. The popcorn kernel absorbs light energy (radiation) which is converted to heat, causing it to pop. So the correct conclusion is that the popcorn was heated by the light it absorbed (radiation).

Answer:

D. 61 seconds (assuming the options are labeled A:15 seconds, B:83 seconds, C:27 seconds, D:61 seconds)

Question 2