Answer the question below: If Mona is building a machine to help her vacuum her floor and she decreases the amount of force the engine inside the vacuum, what happens to the vacuum ability to make work easier increases or decreases? Assuming that: Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.
decreases
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Answer the question below: Mary is taking measurements of the amount of oxygen in samples of water. If she measured the total levels of dissolved oxygen in a sample at 70 degrees fahrenheit and compared it to a sample at 80 degrees fahrenheit, which would contain more dissolved oxygen 80 degrees fahrenheit or 70 degrees fahrenheit? Assuming that: Warm water cant hold as much dissolved oxygen as cool water, so an increase in the temperature of water decreases the amount of oxygen it contains.
70 degrees fahrenheit
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Answer the question below: Eric noticed a glacier outside his boat expanding over time. The Earth's temperature is likely decreasing or increasing? Assuming that: The glaciers on Earth are getting smaller and smaller as Earths temperature rises.
decreasing
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Answer the question below: If Milo is making a circuit and he adds more resistors to it, will the strength of the current increase or decrease? Assuming that: As more resistors are added in parallel, the total current strength increases.
increase
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