Understand that Earth is made of rock and other solid materials
A first look
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Question 1 of 3
Sam is playing on the schoolyard and feels the hard surface under his feet. What is that surface mainly made of?
Question 2 of 3
After a rainstorm, the garden mud feels slippery, but the stone path next to the house stays firm and you can walk on it without sinking. Which idea best explains why the path stays firm?
Question 3 of 3
Which of these is a piece of the Earth?
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