Duration: 40 minutes
Notes / Activity
PS3.B: Energy is present whenever there are moving objects, sound, light, or heat. When objects collide, energy can be transferred from one object to another, thereby changing their motion. In such collisions, some energy is typically also transferred to the surrounding air; as a result, the air gets heated and sound is produced. (4-PS3-2),(4-PS3-3)
By the end of this lesson, the student should able to:
“What do you think are these?” “Can you describe their appearance?”
What did you notice about the beads? (They changed colors.)
Why do you think this happens?
Have you ever had a sunburn?
Do you use sunscreen? How often?
Do you pay attention to SPF levels?
What does this say about sunscreen protecting from exposure to UV rays?
What will happen to you if you are out under the sun for too long?
What will happen to your skin color?