0
How could you predict the length and location of a shadow for a particular time?
Wiki User
∙ 10y ago
There are two things you need to know. You need to know h - the height of the object that will cast the shadow (assume it's all vertical). And then you need to know the angle (theta we'll call it) of the sun with respect to the vertical object of height that will cast the shadow.
The higher the sun the higher the angle. In fact in some instances the angle theta can be 0 degrees at noon (depending on location and time of day and year) or almost 90 degrees when the sun is sitting on the horizon. Where do you get this angle? I believe that the US Navy publishes these angles or they may be on line.
Well once you know the angle and the height h, the length of the shadow x is a simple calculation, x = h tan theta, where tan represents the trigonometric function tangent in a right triangle.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
How does the length of a shadow change during the yearwhy does this happen?
The length of the shadow (on a flat, horizontal floor) depends on the height of the Sun. If the Sun is higher in the sky, the shadow will become shorter.
What size is a shadow in the middle of the day?
That depends on how big the object is, the time of year, and the location you are. obviously, the size would make a difference, the season determines the tilt of the earth changing the shadow length. if you were in Africa at midday, your shadow would be short since the sun is directly overhead. if you were in Antarctica at noon, the sun would be lower to the ground thus creating a longer shadow.
How does the position of the sun in the sky relate to the length of the shadow cast by an object?
The position of the sun relates to the length of the shadow cast by an object because, when the sun is above the object there is no shadow yet, when the sun is say to the east of the object a shadow is cast towards the west, the farther the sun for example east the longer the shadow will be towards the west.
Where would the sun have to be to make a shadow in front of you?
Your shadow will be in front of you because shadows will always be in the opposite direction from light sources.
How does the angle of the sun as it hits earths surface effect the length of the shadows?
The lower the Sun is on the horizon, the longer the shadow that is cast, the higher the Sun is in the sky, the shorter the shadow.
What will be the shadow length at 4 pm?
The answer depends on: the height of the item casting the shadow, the location on earth, the time of year, and the inclination of the surface on which the shadow is cast.
Can groundhogs predict the length of winter?
You have to believe because if its sunny outside he will probably see his shadow. If its cloudy he wont. No. A goundhog is NOT a scientific animal that can predict the seasons. Its just a myth.
If a nail is 50 millimeters in length what is its shadow length in millimeters?
Its shadow will be 50 millimeters in length, if you lay it down on a flat surface.
A 3 foot pole casts a 6 foot shadow A 4 foot pole casts an 8 foot shadow Use a linear equation to predict the length of a shadow cast by a 6 foot pole?
Shadow lengths are proportional to the heights of objects casting the shadows. Therefore, calling the shadow length l, the height h, and the proportionality constant k, l = kh. (The intercept is 0 because an object with no height casts no shadow.) Therefore, in this instance k = l/h = 6/3 or 8/4 = 2. then l(6) = 2 X 6 = 12 feet.
How does the length of a shadow change during the yearwhy does this happen?
The length of the shadow (on a flat, horizontal floor) depends on the height of the Sun. If the Sun is higher in the sky, the shadow will become shorter.
Does the length of a sun stick control the distance a shadow moves?
yes the length of the sun stick does control the distance the shadow moves
What is the relationship between the size of the shadow and the distance of the object from the light source?
The relationship between the size of a shadow of an object and the distance of light source from the object is indirectly proportional. A short distance will make the shadow big while making the distance long will reduce the size of the shadow.
What is the length of your shadow at midday?
[object Object]
What size is a shadow in the middle of the day?
That depends on how big the object is, the time of year, and the location you are. obviously, the size would make a difference, the season determines the tilt of the earth changing the shadow length. if you were in Africa at midday, your shadow would be short since the sun is directly overhead. if you were in Antarctica at noon, the sun would be lower to the ground thus creating a longer shadow.
What was in madame nubescu's chests on shadow of israphel?
Things need to predict the future. A recipe for the players to get
How can you calculate height of a pyramid by measuring the length of its shadow?
By means of trigonometry if you know the angle of elevation or by comparing it with a nearby object if you know its height and shadow length.
How do you use shadows to measure?
You can use shadows to measure the heights of trees, or buildings, as long as you can make two separate measurements at exactly the same time of day. While one person or group measures the length of the shadow of the tree or other object, another person or group carefully measures the length of the shadow cast by a smaller object, such as a person, sign, or pole.The ratio of the length of the shadow to the height of the object will be the same for almost every object casting a shadow at that particular moment of the day. So divide the known or measured height of a person by the length of his shadow to find this ratio, then multiply the other shadow length by this amount, to give a good estimate of the height of the taller object.Example:A tree's shadow at 5 PM is found to stretch 80 feet from the base of the tree.A boy is known to be 5 feet tall, his shadow at 5 PM is 10 feet long.(So the shadow length of other objects, measured at 5 PM, will all be twice their height.)5 ft/ 10 ft = 0.5 and 0.5 x 80 = 40 tells us the tree itself is about 40 feet tall.
