Blog

In which of these situations does the entropy of the universe increase?

What is the formula for molecule 1?

 What is the most likely description of the plates and plate motions  involved in forming the Gallo Mountains?

The next family member after molecule 3 will have what chemical formula?

The age provided for rock A is actually the age of what?

This family (molecules 1, 2, 3, etc) of materials is likely to have what set of properties?

Which of these statements best describes the energy transformations that take place in a car’s gasoline engine?

Semiconductors can behave like metals when you heat them up. Which of the following best explains how and why that happens?

Rock layers N and J occur on either side of the unconformity labeled I. What can you conclude from the cross section about the relative ages of layers N and J?

Which of these best describes the characteristics of the material formed?