Observe: Look closely at the photo. What do you notice about it? What details stand out to you?
NGSS: Practice: Constructing Explanations
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STANDARDS
Explain This!
INGE JOHNSSON/ALAMY STOCK PHOTO
Think: What do you already know that might help explain an element of the photo?
Explain: What do you think is going on in the photo, and why? How do your observations support your claim?
Discuss: Compare explanations with your classmates. How are your ideas similar and different? What new ideas did you get?
Wonder: What questions do you still have? Record them on a separate piece of paper. You can research them later!
buoyancy
the upward force that a fluid or gas puts on a object that is less dense than itself
dense
crowded or thick
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