Fact 1: Fire converts chemical energy into light and heat energy. Fact 2: Wood can help Fire to burn. Given the two facts above, what can convert chemical energy into light and heat energy?

OPTIONS:
- engines
- Hot water
- Burning wood
- Firecrackers
- sound
- Green beans
- cigarettes
- science

Answer: Burning wood

Fact 1: Treating water is used to remove harmful substances before drinking. Fact 2: Boiling is the safest method of treating water. Given the two facts above, what can be done to water to remove harmful substances before drinking?

OPTIONS:
- evaporation
- vaporization
- Dipping a magnet into it
- hydration
- Mixing in heavy metals
- Cooking
- Boiling it
- Adding purified water to it

Answer: Boiling it

Fact 1: Lions live in social groups called prides. Fact 2: Lions live in Africa. Given the two facts above, where are there social groups called prides?

OPTIONS:
- under the sea
- outer space
- complex
- protected
- arctic
- fur seals
- Summer
- africa

Answer: africa

Fact 1: Constriction occurs when the muscular walls of blood vessels contract. Fact 2: Muscle spasms are involuntary contractions of a muscle. Given the two facts above, what can muscle spasms cause?

OPTIONS:
- massive damage
- matter vibrating
- constriction
- friction
- Dehydration
- ketosis
- stretching
- photosynthesis

Answer:
constriction