How can we determine the age of a fossil? If different fossils are found in different layers of rock, could you tell which fossils are the oldest? The youngest?
Where can fossils form? What factors affect whether an organism becomes a fossil?
What kind of rocks do you think are found in Minnesota? Why do you think those are found here?
What are rocks made from? (Remember, make a claim and follow up with any evidence you have at this time.)
Where in the United States are earthquakes most likely to occur? What is the reason for this?
How are earthquakes, volcanoes, and mountains related?
How does the rock of the Earth’s mantle move?
Do you think it is possible to dig your way through the ground to the other side of the Earth? Explain why or why not?
Where is the Earth in space? How do scientists know this?
What do you know about the moon? What are its features? What is the relationship between the Earth and the moon?