23. The leaves of some trees turn from green to brown in the fall because it rai

Question

23. The leaves of some trees turn from green to brown in the fall because it rains less during this part of the year. This statement is an example of which of the following? a. Observation Hypothesis c. Theory d. Scientific law e. None of the above. 24. The high temperature for a day in June is 93°F. What is this temperature 8 reported in Kelvin? a. O K b. 100 oK c. 200 K d 300 K e. 400 K 25. Which of the following statements is true? a. A theory may become a law when proved through experimentation. b. Science is a collection of facts. c. Theories are untested assumptions about some aspect of nature. More than one of the above is true. e.) None of the above.

Explanation / Answer

Q. 1
It is a hypothesis.
Hence option (b) is correct.
A hypothesis is usually a guess. Because fading of colour of leaves from green to brown may be due to lack of water, rainfall also it may be due to lack of nutrients in the soil,or some other reasons. We can prove our hypothesis by experimentation.
Q.2
We know that
K =(m°F - 32)x5/9 +273.15
Therefore
K=(93-32)x5/9 +273.15
K=307.03
K=300 approx
Hence option (d) is correct.

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