*Question*
Choose between "air" and "water". Question: Mike found out that air is smoother than water while playing with his yo-yo. The yo-yo reached a greater rate of speed through (A) water (B) air
**Answer**
water

*Question*
Choose between "asphalt" and "limestone". Question: Michelle is riding a bicycle on a course that takes her over both limestone and asphalt. She notices that she goes faster on the asphalt than she does on the limestone. She knows this is because the asphalt (A) has more rugged texture (B) has a smoother texture.
**Answer**
limestone

*Question*
Choose between "wet pavement" and "dry sand". Question: My shoes move much quicker through wet pavement than dry sand because wet pavement is (A) more friction (B) less friction
**Answer**
dry sand

*Question*
Choose between "Fire truck" and "Car". Question: A fire truck is able to go faster than a car when it has its siren on so in the same amount of time it goes (A) further (B) less far.
**Answer**
Fire truck