Date: Wed Oct 16 18:41:07 PDT 2002
Student's Name: Jessica
Answer(or question to Mentor): Since five seconds equals one mile, then 32 seconds equals what?
So I divided five into thirty two and got 6.4; therefore, 32 seconds
equals 6.4 miles.
Challenge:
1. If five seconds equals 5,280 ft, then 5,280 feet equals one mile.
So then I divided 5 into 5,280 and got 1,056. So then 1 second equals 1,056 feet.
2.
a. If lightining strikes 100 times every second, and there are 60 seconds in one minute, then to get the answer, I multiplyed 60 times 100. My answer is that one minute equals 6,000 lightning strikes.
b. One hour equals 60 minutes
60 seconds in one minute
So I timed 60 minutes to 60 seconds and got 3,600 seconds.
Then, I timed 3,600 seconds to 100 (which is the times lightning strikes in one second. My final answer was that one hour equals 60,000 lightning strikes.
c. There is 24 hours in a day and 60 minute in an hour. There is 60 seconds in a minute. Therefore, I timed 24 and 60 and got 1,440 minutes. So then I muliplyed 1, 440 and 60, which equals 86, 400 seconds. Then I multiplyed 86,400 times 100. One day equals 8,640,000.
d. There is 24 hours in a day and 7 days in a week. There is is 60 minutes in an hour and 60 seconds in a minute. I multiplyed 24 times 7 and got 168 hours. Then, I multiplyed 60 times 168 and got 10,080 minutes. Then I multiplyed 10,080 and 60 and got 604,800 seconds. Then I multiplyed 604,800 times 100 and got 60,480,000. So one week equals 60,480,000.
e. Most months have 31 days. There are 24 hours in one day, 60 minutes in one hour, and 60 seconds in one minute. So I multiplyed 31 and 24 and got 744 hours. Then I multiplyed 744 times 60 = 44, 640. I multiplyed 44,640 times 60 and got the answer 2,678,400 seconds. Then I multiplyed that number of seconds and 100 and got 267,840,000. So one month equals 267,840,000 strikes of lightning.
f. I took the amount of lightning strikes in one month and multiplyed it and 12 since there are 12 months in a year. I got 3,214,080,000. So, one year equals 3,214,080,000.
Date: Sat Oct 19 17:44:05 PDT 2002
Student's Name: Jessica
Instructor Comments: Maria,
Please submit your response to this student as soon as possible.
Dr. Bowers
Date: Mon Oct 21 17:48:01 PDT 2002
Student's Name: Jessica
Mentor Reply: Hi Jessica,
I appreciate your reponse to my quetion. I see that you have the right idea in solbing the problem. Indeed, you realized that if lighting is seen, the sound of thunder will travel 1 mile in 5 seconds. You needed to find how far away is the lighting if thunder is heard 32 seconds after seeing lighting. Indirectly, you did a proportion which gave the correct anwser. Unfortuntely, your wording was incoreecet in that 5 seconds does not litterally equal 5280 feet. Good on gett the coreect anser. Change question number two is correct. Lighting will hit 6000 times in 1 minute. However, in 2b you seemed to set up the problem correctly, but your anser was incorrect. What is the right anwser to 2b? As for your "per day" anser, you are correct. I like how you explain these question 2c to f and a. I noticed that you solved the "per month" question by multiping lighting strike per day by 31 days. This is fine Jessica, but it is also o.k. to multiply lighting strikes per week by 4. (Since their are four weeks in a month) The abouve comment also applies to 2f "per year"
Sincerely,
Maria Alvarez
Date: Mon Oct 21 17:48:48 PDT 2002
Student's Name: Jessica
Mentor Reply: Hi Jessica,
I appreciate your reponse to my quetion. I see that you have the right idea in solving the problem. Indeed, you realized that if lighting is seen, the sound of thunder will travel 1 mile in 5 seconds. You needed to find how far away is the lighting if thunder is heard 32 seconds after seeing lighting. Indirectly, you did a proportion which gave the correct anwser. Unfortuntely, your wording was incoreecet in that 5 seconds does not litterally equal 5280 feet. Good on gett the coreect anser. Change question number two is correct. Lighting will hit 6000 times in 1 minute. However, in 2b you seemed to set up the problem correctly, but your anser was incorrect. What is the right anwser to 2b? As for your "per day" anser, you are correct. I like how you explain these question 2c to f and a. I noticed that you solved the "per month" question by multiping lighting strike per day by 31 days. This is fine Jessica, but it is also o.k. to multiply lighting strikes per week by 4. (Since their are four weeks in a month) The abouve comment also applies to 2f "per year"
Sincerely,
Maria Alvarez
Date: Wed Oct 23 16:28:16 PDT 2002
Student's Name: Jessica
Mentor Reply: Hi Jessica,
Great Job! Your answer to the original question is correct.
Your answer to challenge question #1 is correct as well. However, the question asks you to express the answer in feet per second, so please do so.
Your answer to challenge problem 2a is correct, but again you need to express it as strikes per second.
Your answer to challenge problem 2b is not correct. Hint: You correctly state that you need to multiply 100 strikes/ sec times 36000 seconds but it looks like you have a typo in your final answer.
Your answers for all the rest of the challenge problems are correct . Great Job!
If you could just revise the labels for the original problem and challenge problem #1 and also fix the error in challenge problem 2b you will have completed the problems very well!
I look forward to your response.
Sincerely, Maria Alvarez
Date: Thu Oct 24 19:30:46 PDT 2002
Student's Name: Jessica
Answer(or question to Mentor): Here is my edited answer.
Since five seconds equals one mile, then 32 seconds equals what? So I divided five into thirty two and got 6.4; therefore, 32 seconds equals 6.4 miles. Challenge: 1. If five seconds equals 5,280 ft, then 5,280 feet equals one mile. So then I divided 5 into 5,280 and got 1,056. So then 1 second equals 1,056 feet per second. 2. a. If lightining strikes 100 times every second, and there are 60 seconds in one minute, then to get the answer, I multiplyed 60 times 100. My answer is that one minute equals 6,000 lightning strikes per second. b. One hour equals 60 minutes 60 seconds in one minute So I timed 60 minutes to 60 seconds and got 3,600 seconds. Then, I timed 3,600 seconds to 100 (which is the times lightning strikes in one second. My final answer was that one hour equals 360,000 lightning strikes per hour. c. There is 24 hours in a day and 60 minute in an hour. There is 60 seconds in a minute. Therefore, I timed 24 and 60 and got 1,440 minutes. So then I muliplyed 1, 440 and 60, which equals 86, 400 seconds. Then I multiplyed 86,400 times 100. One day equals 8,640,000 lighting strikes per day. d. There is 24 hours in a day and 7 days in a week. There is is 60 minutes in an hour and 60 seconds in a minute. I multiplyed 24 times 7 and got 168 hours. Then, I multiplyed 60 times 168 and got 10,080 minutes. Then I multiplyed 10,080 and 60 and got 604,800 seconds. Then I multiplyed 604,800 times 100 and got 60,480,000. So one week equals 60,480,000. e. Most months have 31 days. There are 24 hours in one day, 60 minutes in one hour, and 60 seconds in one minute. So I multiplyed 31 and 24 and got 744 hours. Then I multiplyed 744 times 60 = 44, 640. I multiplyed 44,640 times 60 and got the answer 2,678,400 seconds. Then I multiplyed that number of seconds and 100 and got 267,840,000. So one month equals 267,840,000 strikes of lightning. f. I took the amount of lightning strikes in one month and multiplyed it and 12 since there are 12 months in a year. I got 3,214,080,000. So, one year equals 3,214,080,000.
Thanks for helping me!
-Jessica
