Problem:OPTIONS:
- depth
- volume
- dimension
- size
- adding heat
- distance
- speed
- feet

Fact 1: Aruler is used for measuring the length of an object. Fact 2: Lengths A length is a measure of distance. Given the two facts above, a ruler is used for measuring?
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A: distance

Problem:OPTIONS:
- Dehydration
- Plastics
- Metals.
- sweating
- Cellulose
- sugar
- Pesticides
- Papers

Fact 1: Bacteria cause food to spoil. Fact 2: Bacteria resistant plastics inhibit the growth of bacteria and molds. Given the two facts above, what can help prevent food from spoiling? ?
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A: Plastics

Problem:OPTIONS:
- evaporation
- microwaving
- boiling
- freeze drying
- layers of fat
- deep frying
- mechanical
- Dehydration

Fact 1: Astronauts require preserved food for extended flights. Fact 2: Freeze-drying Freeze drying is a method of preserving materials. Given the two facts above, which of the following keeps food viable for extended flights? ?
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A: freeze drying

Problem:OPTIONS:
- sun light
- Solar energy
- rain
- light
- calcite
- automobiles
- magma
- energy

Fact 1: Absorbing energy causes objects to heat. Fact 2: Sunlight shines through the atmosphere and is absorbed by the Earth's surface. Given the two facts above, what heats most of the Earth's surface during the day?
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A:
sun light