List the 4 structures in space from smallest to largest.
Star, solar system, galaxy, universe.
500
What properties of pure water always stays the same?
Density, boiling point, melting point, freezing point.
500
How can we separate salt from ocean water? Describe the process.
1. Pour salt water into glass bowl.
2. Put ceramic mug in middle of bowl.
3. Cover bowl with plastic wrap.
4. Put bowl directly under sunlight.
5. Put rock on top of plastic wrap in the middle.
6. Wait several hours.
500
What are the 2 main differences between plant and animal cells?
Plant cells have cell walls and chloroplasts while animal cells don't.
500
Looking a topographic map that has contour lines closer at the top and wider at the bottom, what is the landform?