Question: Choose your answer.

Greenhouse gases in the atmosphere trap heat near Earth's surface. Which of these is a greenhouse gas?

OPTIONS:
- nitrogen
- argon
- water vapor
- oxygen
My Answer: water vapor

Question: Choose your answer.

Paula determines a property of a marble using a balance and a graduated cylinder. What property is Paula most likely determining by using both tools?

OPTIONS:
- density
- length
- mass
- volume
My Answer: density

Question: Choose your answer.

The following represents a number displayed on a calculator. 1.454545 E3. Which of the following shows how a student should record this number in a laboratory report?

OPTIONS:
- (1.45)^3
- 1 5/11
- 1.45 x 10^3
- 1.45 x 3
My Answer: 1.45 x 10^3

Question: Choose your answer.

A recent study concluded that about 90% of all large predatory fish such as tuna have disappeared from the world's oceans in the past 50 years. Which of these is most likely the direct cause of this loss?

OPTIONS:
- Urban development near the coast
- Commercial harvesting from the ocean
- Climate change on Earth
- Acid precipitation over the oceans
My Answer:
Commercial harvesting from the ocean