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How could you measure the height of a tree at noon when the sun is directly overhead and the tree casts no shadow?
Cindyhuang13
Your best bet here would be to use trigonometry. One stand a given distance away from the tree and sight the top of the tree, say with a clinometer, to measure the angle of elevation. Then knowing the angle and the distance you are from the tree, the height of the tree can be calculated with a tangent function.
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∙ 11y ago
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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.
A building with height D feet has a shadow with G feet as its length. What is the height of a neighboring building with a shadow of C feet?
D/G = x/C The x is the height of the neighboring building. Just cross-multiply, then divide.
What is the height of a tower if its shadow is 500 feet long and a flag pole is 40 feet tall with a shadow 36 feet long?
The ratio of the height of the object to its shadow are the same for both objects. So, if H is the height of the tower, then H/500 = 40/36 therefore H = 500*40/36 = 555.55... feet.
A tree casts a shadow that is 21 feet long at the same time as a fence post casts a shadow that is 6 feet long The fence post is 4 feet tall What is the height of the tree?
Ratio of object to its shadow is the same. So if T is the height of the tree, then T/21 = 4/6 So T = 21*4/6 = 84/6 = 14 feet
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 long would my shadow be if i was 5'6?
Your height isn't as important as the time of day of the measurement. When the sun is directly overhead, your shadow won't be measurable.
Why do we cast hardly any shadow in the middle of the day?
Because the sun is directly overhead.
What time of day is the shadow shortest?
Noon, because the sun is directly overhead.
Is shadow lenghts caused by light a scientific law or therory?
Yes - it's simple trigonomety - the shadow length (assuming level ground, the sun at angle a and a vertical object of height h) is h tan a, where a = 0 at midday with the sun directly overhead.
What does it mean when your shadow doesn't appear?
A shadow always appears. If you are solid, you create a shadow. If the light source is directly overhead, your shadow may be cast behind you. Just turn your head, and I assure you, your shadow will be there.
What does it means if when you walk outside on a summer or winter day at noon and do not cast a shadow?
the sun is directly overhead.
What is 45 degrees of the sun?
A 45 degree sun angle indicates that the sun is halfway between the horizon and directly overhead (known as the zenith). Such an angle causes the length of an object's shadow to be equal to the object's height.
How do you measure wood size?
By its shadow :) Then I measure mine shadow, or shadow of any object I know how high is.. and use proportion: HW/MH=WS/MS or HW=MH x WS/MS HW=wood height MH=mine height WS=length of wood shadow MS=length of mine shadow
What unit of measure for height of a tree?
Hold a yardstick perpendicular to the ground, and measure the shadow. Make a proportion, then measure the tree's shadow. Use the proportion to compute.
When is your shadow the shortest?
your shadow is the shortest when the sun is right above you!
How do you use shadow method to estimate height or distance?
Measure height and shadow af a smaller object --- call these h1 and s1 measure the shadow of something larger like a tree. call this s2 its height is the unknown call it h2 use a proportion to solve the problem h1/s1 = h2/s2 substitute in the measured amounts, rearrange the equation (proportion) and find the answer.
Where is the sun in the sky to make a short shadow?
As high a possible, at mid day. It's even shorter as you get closer to the tropics, where at the right time, the sun can be directly overhead.
