Ques:Warm air is less dense than cool air, so it rises higher in the troposphere. If Jim lowers the temperature of the air inside his balloon, will his balloon rise higher into the air or sink towards the ground rise higher or sink lower?

Ans:sink lower
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Ques:The smaller its mass is, the greater its acceleration for a given amount of force. What happens to a heavy car when it has the same power as a light car accelerates faster or accelerates slower?

Ans:accelerates slower
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Ques:Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance. Alan's lye has a higher pH than his soda. His lye was less or more acidic?

Ans:less
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Ques:The more curved the surface of a lens is, the more it refracts the light that passes through it. In a science class, the professor demonstrates refraction to the class. First, the professor shows a curved lens from a binocular, and then a flat pane of glass, demonstrating that the curved lens refracts less light or the flat pane refracts less light.?

Ans:
the flat pane refracts less light.
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