Fact 1: Matter vibrating can cause sound. Fact 2: Sound waves vibrate. Given the two facts above, answer the question "what vibrates?" with the following options: - nerves - motion - waves - energy - dissolve - explode - shake - Energy.
waves

Fact 1: Heating a liquid can be used to identify that liquid 's boiling point. Fact 2: Boiling is the conversion of a liquid to a gas. Given the two facts above, answer the question "What can be learned from heating a liquid?" with the following options: - The bending of a ray of light - When it becomes a gas - chemical equations - When it becomes a solid - kinetic energy - When its mass increases - When it condenses - matter vibrating
When it becomes a gas

Q: Fact 1: An automobile engine transforms chemical energy into mechanical energy. Fact 2: Gasoline is a mix of hundreds of chemicals. Given the two facts above, answer the question "What do cars use for energy?" with the following options: - engines - Energy. - heat - Gasoline - energy - fossil fuels - coal - photons
A: Gasoline

Question: Fact 1: Heat can change the state of matter. Fact 2: Liquids are one state of matter. Given the two facts above, answer the question "What can change stuff to liquid?" with the following options: - gas - vapors - measuring - rivers - heat - observing - Frogs - pH
Answer: heat

*Question*
Fact 1: Competition may cause animals to fight towards members of their own species. Fact 2: Mock fights also teach animals to interact with others of their species. Given the two facts above, answer the question "Competition may cause animals to do what with other animals of their species?" with the following options: - burrow - migrate - break off - disengage - kill them - mating - interact - threatened
**Answer**
interact

Fact 1: Caffeine is a central nervous system stimulant. Fact 2: Caffeine is a stimulant, and a stimulant constricts blood vessels. Given the two facts above, answer the question "What does caffeine do to blood vessels?" with the following options: - It expands - looseness - hydrate their cells - Constrict them - sweating - Dehydration - They may not survive. - Damages them
Constrict them