https://padlet.com/tec430/544s11uvjgdn Using your Lens and Mirrors table come up with three questions increasing in level of difficulty with the answer. Tier 1 (Knowledge Based: Requires person to identify information) Example: “What is the biggest city in Japan?” Tier 2 (Comprehension: Asks persons to take several bits of information and put them into a single category) Example: “If I put these three blocks together, what shape do they form?” Tier 3 (Application: Take information they already know and apply it to a new situation) Example: “How would you use your knowledge of latitude and longitude to locate Greenland?” en-us 2017-03-28 16:08:01 UTC 2017-04-09 13:46:37 UTC hello@padlet.com aahmed5 https://padlet.com/tec430/544s11uvjgdn/wish/163184712 Tier One Question:  Which type of mirror makes objects appear smaller , but the area of view larger ?

Answer: Convex

Tier Two Question: A 5 cm tall light bulb is placed a distance of 45 cm from a double convex lens having a focal length of 15 cm. 

1/15 = 1/45 + 1/x

0.067 = 0.022 + 1/x

0.044 = 1/x

x = 22.5 cm

Tier Three Question: 
If you are reflecting an image off a flat surface, and it shows the word "KALEIDOSCOPE", what will it look like in the mirror?

"EPOCSODIELAK" (Just pretend the letters are inverted too.

]]> 2017-03-28 16:19:11 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163184712 https://padlet.com/tec430/544s11uvjgdn/wish/163184806 1.  For a convex lens, which types of images does it form?
Both virtual(upright) and real(inverted).
2.  A lens forms an erect image for all positions of the object in front of it. Is the lens convex or concave?
Concave lens
3. Astigmatism is a defect in the eye or in a lens caused by a deviation from spherical curvature, which results in distorted images, as light rays are prevented from meeting at a common focus. How do you fix this?
Using a concave lens would correct myopic astigmatism. Since the light is centering in front of the lens, using a concave lens would diverge the rays, centering them on the retina. Using a convex lens would correct hyperopic astigmatism. Since the light centers behind the retina, the convex lens would converge them, bringing them to center on the retina.

]]> 2017-03-28 16:19:29 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163184806 kaylayim5 https://padlet.com/tec430/544s11uvjgdn/wish/163185154 (Kayla)Tier 1: How do real and virtual images occur?
Answer: A real image occurs where rays converge, whereas a virtual image occurs where rays only appear to converge.
(Kayla)Tier 2: A convex lens will make an image appear ______ if the object is placed between the focal point and the lens.
Answer: Larger and right side up.
(Andrew)Tier 3:  Would a lens bend light rays if the speed of light was the same in all materials?
Answer. Think of the index of refraction—refraction would occur, bending light. Otherwise, many devices utilizing lenses such as telescopes would not work. ]]> 2017-03-28 16:20:32 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163185154 https://padlet.com/tec430/544s11uvjgdn/wish/163185752 1. Tier One: What is the definition of a lens, and what are the practical applications of such a device?
Answer: Something that mentions a camera, microscope, and other optics.
2. Tier Two: What would be the result of a convex lens and a concave lens put together in an array, and what would the word "MAHER" look like?
Answer: It all depends on the angle, and no answer can be determined.
3. Tier Three:
Based off of the bottom diagram of a concave mirror, please determine the focal length if the distance between the object and the mirror is 6 cm and the distance between the real image and the mirror is 3 cm.
Answer: Focal length is 2 cm, based off of the formula 1/d0 +1/di = 1/f0.]]> 2017-03-28 16:22:13 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163185752 https://padlet.com/tec430/544s11uvjgdn/wish/163186166 T1: What types of images can a convex mirror form?
Virtual Image.

T2: A real object is behind the secondary focal point (2F'). and a real image is created. What kind of lens or mirror does this?
Convex lens

T3: The focal point of someone's eyes is in front of the retina instead of on it. What kind of lens do they need to fix it?
Concave lens.]]> 2017-03-28 16:23:19 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163186166 https://padlet.com/tec430/544s11uvjgdn/wish/163188281 T1: Which type of mirror forms both a real and a virtual image?
Concave mirror
T2: If an object is put in front of a convex lens and the image created is the same size as the object, then where is the object located relative to the focal points?
The object is located on the secondary focal point
T3: Give an example of when a convex lens might be used in glasses. 
The focal point lies behind someones retina, so a convex lens would be used to fix it. ]]> 2017-03-28 16:28:26 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163188281 https://padlet.com/tec430/544s11uvjgdn/wish/163196159 T1: What is a diverging lens somtimes called and why? 
ANSWER: Called a Concave Lens because it is thinner at the centre than at the edges. 
T2: If the real object is at F', what type of image is formed?
ANSWER: No image is formed. 
T3: What types of tool can be used when the distance of an object from the lenses is less than one focal point away? 
ANSWER: Redaing glasses and magnifying lenses. ]]> 2017-03-28 16:50:24 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163196159 https://padlet.com/tec430/544s11uvjgdn/wish/163196404 Tier 1: For which type of mirror and lens is the secondary focal point in front of the mirror/lens?
        A: The convex lens and the  concave mirror
Tier 2: Which kind of mirror makes the object appear smaller but makes the area of view larger?
A: A convex mirror
Tier 3: Camera lenses are convex The rays of light from the person are converged by the convex lens forming an image. What would happen if that camera lens would be replaced by a concave lens?
A:  A camera only works because the convex lens converges the real object into a more compact image. Replacing the lens with a concave lens would cause the light to be spread out and fail to create the image.]]> 2017-03-28 16:51:18 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163196404 https://padlet.com/tec430/544s11uvjgdn/wish/163271797 2017-03-28 21:39:14 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163271797 alin3 https://padlet.com/tec430/544s11uvjgdn/wish/163271926 T1: For what type of mirror is the focus located behind the mirror?
Answer: Convex mirror

T2: Where must an object be placed relative to a convex lens in order for the lens to display a real image?
Answer: Behind F'

T3:  Where should a magnifying glass be held relative to the object one is trying to magnify?
Answer: The magnifying glass should be held close to the object (in front of F'), which will produce a larger upright image.]]> 2017-03-28 21:39:51 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163271926 https://padlet.com/tec430/544s11uvjgdn/wish/163518919 1.What type of mirror is like the side mirror on the car?
A:Convex

2.

]]> 2017-03-29 18:26:33 UTC https://padlet.com/tec430/544s11uvjgdn/wish/163518919 https://padlet.com/tec430/544s11uvjgdn/wish/165532441 1.What type of mirror is like the side mirror on the car?
A: Conves

2.what is an image formed with a lens that can be projected onto a screen called?
A:Real image

3.The law that describes the relationship between the angle of incidence and the angle of reflection is called?
A:Law of reflection]]> 2017-04-09 03:16:39 UTC https://padlet.com/tec430/544s11uvjgdn/wish/165532441