Fact 1: Telephones are used for communication by two people by transmitting sound. Fact 2: Loudspeakers then turn the signals into sounds. Given the two facts above, what are used for communication by two people by transmitting signals?
OPTIONS:
- electricity
- satellites
- air
- phytoplanktons
- unidirectional
- telephones
- the Sun
- waves
telephones

Fact 1: Melting means changing from a solid into a liquid by adding heat energy. Fact 2: All temperatures are measures of heat energy. Given the two facts above, what is increased to cause something to change from a solid into a liquid?
OPTIONS:
- Evaporation
- water vapor
- hydrogen
- temperature
- ice cubes
- h2o
- sweating
- Water expanding

Answer: temperature

Question: Fact 1: Faulting of rock in Earth 's crust causes earthquakes. Fact 2: Earthquakes generate P waves and S waves which can travel throughout the earth. Given the two facts above, the origin of P-waves and S-waves can be traced back to what?
OPTIONS:
- Something with a head, thorax, and abdomen
- chemical messengers
- flow of electrons
- Electrical energy
- Faulting of rocks in the crust
- solid, liquid, gas
- electromagnetic energy
- that material's properties
Answer: Faulting of rocks in the crust

input with options: Fact 1: When light enters the eye through the pupil , that light falls on the retina. Fact 2: Light is the visible form of electromagnetic energy. Given the two facts above, what goes to the retina upon entering the eye?
OPTIONS:
- sensory neurons
- Your sensory system picks it up
- sound energy
- an electron microscope
- electromagnetic energy
- vibrations
- Electrical energy
- heat waves
output: electromagnetic energy

Q: Fact 1: Dilation occurs when cell walls relax. Fact 2: Plant cells are encased by a cell wall. Given the two facts above, what occurs when the encasing of a plant cell relaxes?

OPTIONS:
- recovery
- dilation
- fever
- shrinkage
- heat-expansion
- contraction
- Exfoliation
- It expands

A: dilation

Fact 1: Treating water is used to remove harmful substances before drinking. Fact 2: To ensure that it is safe to drink water, treat it all the time. Given the two facts above, to ensure that water is safe to drink, harmful what are removed before drinking?
OPTIONS:
- leeches
- seeds
- toxins
- currents
- bacteria
- substances
- Roundworms
- plants
substances