You are presented with the quiz "what can be added to a solid to decrease its freezing point?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "adding salt to a solid decreases the freezing point of that solid" and "for example, salt is NaCl". So, what's the best answer to the question?
OPTIONS:
- oxygen
- ice
- an ion
- NaCl
- potash
- Acids
- sugar
- h2o
NaCl
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You are presented with the quiz "turbines are used to what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "wind is used for producing electricity" and "wind Turbines Wind turbines are windmills that generate electricity". So, what's the best answer to the question?
OPTIONS:
- direct energy
- Metling snow
- run a car
- produce electricity
- kinetic energy
- chop trees
- lift heavy objects
- enormous damage to homes
produce electricity
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You are presented with the quiz "What converts oxygen in water into oxygen in blood?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "breathing is when a gill converts from oxygen in water into oxygen in blood" and "gill slits form gills in fish". So, what's the best answer to the question?
OPTIONS:
- sharks
- germs
- Enzymes
- starfish
- rivers
- Jellyfish
- streams
- a fish
a fish
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You are presented with the quiz "Atoms make up many things, like what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "viruses are usually considered to be nonliving" and "all matter, living and nonliving, is made up of atoms". So, what's the best answer to the question?
OPTIONS:
- glass
- matter
- A computer
- Fuel cells
- copper
- viruses
- Light
- Energy
viruses
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