Fact 1: Magnetism can cause objects to repel each other. Fact 2: The maglev trains are pushed and speeded up by the fact that like poles attract and unlike poles repel. Given the two facts above, what is used in order for Maglev trains to function?
OPTIONS:
- coal
- Energy.
- electrically
- energy
- magnetism
- diesel
- tow rope
- power
magnetism
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Fact 1: The Earth being tilted on its rotating axis causes seasons. Fact 2: Seasonal Affective Disorder or SAD is a depressive condition caused by seasonal changes. Given the two facts above, the tilt of the Earth's rotational axis can lead to?
OPTIONS:
- global warming
- Dehydration
- flooding
- distance
- climate
- erosion
- dry and hot
- depression
depression
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Fact 1: Heating salt water causes the water to evaporate while the salt remains. Fact 2: For example, in salt water, salt is the solute and water is the solvent. Given the two facts above, what is left over when salty water is heated?
OPTIONS:
- Time and energy
- nutrients
- Sediment
- energy
- bacteria
- Energy.
- loose soil
- The solute
The solute
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Fact 1: Uneven heating of the Earth 's surface cause wind. Fact 2: Wind is produced as the sun heats the air. Given the two facts above, what causes wind?
OPTIONS:
- speed
- the sun
- energy
- supersonic
- Energy.
- erosion
- a chime
- messengers
the sun
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