1. What are some natural disasters that change Earth’s surface? 2. What is lava made of? What does this say about what is inside the earth?

3. What causes an earthquake?

4. How do you think mountains are formed?

5. Take a look at a world map, are there any continents that might fit together?

6. Why is it important that scientists study tectonic plates?

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Asolution containing hci would likely have

For each of the formulas, classify the formula as either an empirical formula, a molecular formula, or both. nahco3 empirical molecular both