1. For this experiment to work we need to use two different locations to get the latitude, what are...

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1. For this experiment to work we need to use two different locations to get the latitude, what are these locations? XXXXXXXXXXDescribe the method used to measure the Sun's shadow XXXXXXXXXXIn the drawing on page 18 what are the letters b and d used for? (Skip This one XXXXXXXXXXHow can we get a more accurate measurement of the radius of the Earth using the method in the lab? XXXXXXXXXXWhy is there a difference between true solar noon and noon? XXXXXXXXXXThe Parallax of a Star  Pre-Lab    Name:______________________________ Date: ___________________ Section: __________    1) What is the definition of Parallax? XXXXXXXXXXDescribe how the Cross-staff is used to measure the amount of parallax XXXXXXXXXXDescribe the procedure given in the manual for measuring the parallax angle and the distance to the star HT Cas XXXXXXXXXXWhat might cause your final results to not be as accurate? How can the accuracy be improved? XXXXXXXXXXExtra Credit: The sun is 8.3 light-minutes away from the Earth. What is its parallax angle?  Light from the Earth takes 1.3 seconds to get to the Moon. What is the Moon’s parallax angle?   Thanks.
	
Document Preview: The Earth's Radius Pre-LabName:______________________________  Date: ___________________ Section: __________For this experiment to work we need to use two different locations to get the latitude, what are these locations?Describe the method used to measure the Sun's shadow.In the drawing on page 18 what are the letters b and d used for? (Skip This one)How can we get a more accurate measurement of the radius of the Earth using the method in the lab?Why is there a difference between true solar noon and noon?The Parallax of a StarPre-LabName:______________________________  Date: ___________________ Section: __________1) What is the definition of Parallax?2) Describe how the Cross-staff is used to measure the amount of parallax.3) Describe the procedure given in the manual for measuring the parallax angle and the distance to the star HT Cas. 4) What might cause your final results to not be as accurate? How can the accuracy be improved?5)  Extra Credit: The sun is 8.3 light-minutes away from the Earth. What is its parallax angle?Light from the Earth takes 1.3 seconds to get to the Moon. What is the Moon’s parallax angle?

David · Accepted Answer

The Earth's Radius
The Earth's Radius  
Pre-Lab 
Name:______________________________  Date: ___________________ Section: __________ 
1. For this experiment to work we need to use two different locations to get the latitude, what 
are these locations? 
Answer 
For measuring the earth radius we need to measure its diameter first as the center of the earth is 
unapproachable. Here we need to be at two opposite poles of the earth to measure the radius of the 
earth.  
2. Describe the method used to measure the Sun's shadow. 
Answer 
Sun’s shadow can be measured with the help of angle of declination of the sun at a place. The tangent 
of the angle of declination gives us an idea about the ratio of objects height and sun’s shadow, which 
can be calculated easily.  
3. In the drawing on page 18 what are the letters b and d used for? (Skip This one) 
No drawing available
4. How can we get a more accurate measurement of the radius of the Earth using the method 
in the lab?

1. For this experiment to work we need to use two different locations to get the latitude, what are these locations? XXXXXXXXXXDescribe the method used to measure the Sun's shadow XXXXXXXXXXIn the...

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