Question: Choose your answer.

Scientists are discovering ways to make some crops use less water. A person working in which job would most benefit from this research?

OPTIONS:
- a farmer
- a doctor
- a waiter
- a cook
My Answer: a farmer

Question: Choose your answer.

Scientists study the current conditions of many solar system objects to gain insight into conditions early in the history of Earth. Which phenomenon most closely models current theories of early Earth?

OPTIONS:
- liquid forming valleys on Mars
- hundreds of active volcanoes on Io
- rock and ice forming the core of Neptune
- ice covering the entire surface of Europa
My Answer: hundreds of active volcanoes on Io

Question: Choose your answer.

Paleontologists often find and study the remains of ancient plants and animals. When the remains of ancient plants and animals are covered by layers of sediment over time, the remains

OPTIONS:
- melt
- dissolve
- become a fossil
- evaporate into vapor
My Answer: become a fossil

Question: Choose your answer.

What is the process called when an acid and a base combine to produce water and salt?

OPTIONS:
- neutralization
- dilution
- titration
- physical reaction
My Answer:
neutralization