Problem:OPTIONS:
- fields
- magma
- earth
- rocks
- volcanoes
- crust
- down
- water

Fact 1: Soil is formed by weathering. Fact 2: Most soil is made of weathered rocks. Given the two facts above, where does soil come from?
****
A: rocks

Problem:OPTIONS:
- electron
- photons
- optic nerve
- a wave
- the sun
- sunlight
- glasses
- iris

Fact 1: Light enters the eye through an opening called the pupil. Fact 2: Light is made of photons . Given the two facts above, which of the following passes through an eye's pupil?
****
A: photons

Problem:OPTIONS:
- water
- moss
- tar
- dirt
- Urea
- coal
- oil
- grass

Fact 1: Oil is formed by layers of sediment pushing down on decomposing algae. Fact 2: Algae Algae Green algae are the simplest of green plants. Given the two facts above, what is formed when sediments push down on green plants?
****
A: oil

Problem:OPTIONS:
- it evaporates
- it sinks
- it floats.
- it expands
- they bend
- Condensation
- vaporization
- kinetic energy

Fact 1: If an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity. Fact 2: Normally ice floats, because it is less dense than water. Given the two facts above, what happens to ice in water?
****
A:
it floats.