fact and question: wind causes erosion
Question: What causes erosion?

What's the answer? OPTIONS:
- paper
- gales
- wood
- money

answer: gales

fact and question: as air pressure decreases , the chance of rain will increase
Question: The pressure in air drops very low, so clouds

What's the answer? OPTIONS:
- flood
- sink
- precipitate
- melt

answer: precipitate

fact and question: as the mass of an object increases , the force required to push that object will increase
Question: The force required to swim through ocean water is greater than the force needed to swim in a heated pool because

What's the answer? OPTIONS:
- pool water is usually cooler than ocean water
- pool waves carry more turbulence than ocean waves
- pool water has less mass and density than saltwater
- saltwater has less mass and density than pool water

answer: pool water has less mass and density than saltwater

fact and question: grey clouds are a source of precipitation
Question: Which would directly follow the appearance of grey clouds?

What's the answer? OPTIONS:
- UFOs
- planes
- sleet
- tsunami

answer:
sleet