7272 | Science & Nature | Multiple Choice | Easy | What is the thin, outermost layer of the Earth? |
7273 | Science & Nature | Multiple Choice | Easy | Which of the following is not one of the groups on the periodic table? |
7274 | General Knowledge | Multiple Choice | Medium | The phrase "accident waiting to happen" is an example of what type of figure of speech? |
7275 | Science: Gadgets | Multiple Choice | Easy | What is the name of a simple machine that is made up of a stiff arm that can move freely around a fixed point? |