Question: Choose your answer.

Which human activity has most negatively affected air quality?
My Answer: burning coal

Question: Choose your answer.

During a presentation on astronomy, Professor Williams discussed various measurements in space. Which objects was she referring to when she talked about how astronomical units (AU) were determined?
My Answer: the Sun and Earth

Question: Choose your answer.

Two identical lamps contain the same amount of different types of oil. They are allowed to burn until all the oil has been burned. Which measurement will best provide the total difference in chemical energy between the two oils?
My Answer: time it took for lamps to use oil

Question: Choose your answer.

A paper bag is ripped into pieces. Which of these BEST describes the pieces of the bag?
My Answer:
Smaller than the whole bag