1) Title p. 102: How Do Reflection and Refraction Work? 2) Record the date 3) Record and highlight the goal question: What is the difference between reflection and refraction?
5) After trying to achieve the different goals set by the game, go to the top of page 102 and copy down this question: What do you notice about how the light reflects off of the mirror? 6) Make sure you answer using COMPLETE sentences.
Task 1: 1) Title the next part of the page: "Reflection Demonstration" 2) As I use a laser pointer and a mirror, draw a quick picture of what happens. LEAVE ROOM TO WRITE! 3) After the demo and our discussion of it, use Claim-Reason-Evidence to explain what happened. Claim: When light hits a mirror, it... Reason: This happens because... Evidence: I know this because...
Task 2:
1) Title the next part of the page: Law of Reflection
2) Copy this down: The Law of Reflection states that the angle of incidence equals the angle of reflection.
3) Then use a protractor to draw a diagram that shows this.
Reflection of Light - LAW.jpg
The Law of Reflection states that the angle of incidence equals the angle of reflection.
Task 3:
1) Title the top of page 103: Refraction Demo
2) After we watch the demo and discuss it, draw an image that shows what happened.
3) Use claim-reason-evidence to explain what happened. Claim: When light moves from air into another object, it... Reason: This happened because... Evidence: I know this because...
Closure: bottom of p. 103
Go back to the goal at the top of the page. Have you achieved it? Can you explain how reflection and refraction are different?
In the empty space at the bottom of the page, write a sentence that explains the difference between reflection and refraction.
Homework:
1) Prepare for the quiz we'll have in our next class
- What is a wave?
- How do we label the parts of a wave?
- What are the types of waves in the electromagnetic spectrum? - name them in order (longest wavelength to shortest and vise versa)
- What is a use for each type of EM wave?
- What are the primary colors of light? How do they combine to make other colors?
- What are all of the colors in the color spectrum?
- Why do objects look the color they do?
Task 2:
Color images on the cover of the unit to represent what we've learned about light so far.
Week 25, Days 3-4
PTT:
Take 5 minutes to read through the resources below. A lot of this is new information and vocabulary you will be using in the next 2 classes while we do a lab investigation.
Basic Optical Devices -Lenses,Mirrors,Prisms
Lenses
A lensbends light in a specific way. A convex lens (converging lens) bends light so that the light rays come together in a point. This is why a magnifying glass makes a hot spot of concentrated light (Figure 10.17). Aconcave lens (diverging lens) bends light so it spreads light apart instead of bringing it together. An object viewed through a diverging lens appears smaller than it would look without the lens.
Concave Lens - allows light to pass through. The lens is wider at the top then the middle. The difference in thickness causes the light to bend at different speeds. This causes it to spread out. Examples: car headlights or a flashlight.
lens-b2.gif
Convex Lens - Allows light to pass through. The glass is thicker in the middle then at the top and bottom. It takes less time for the light to travel through the thinner parts of the lens. Thus causing the light to diverge or bend in.
lens-a2.gif
Mirrors
A mirrorreflects light and allows you to see yourself. Flat mirrors show a true-size image. Curved mirrors distort images. The curved surface of a fun house mirror can make you look appear thinner, wider, or even upside down! Mirrors can have a concave and convex shape similar to the lens. Here is the law of reflection for a flat mirror.
Prisms
A prismis usually made of a solid piece of glass with flat polished surfaces. A common triangular prism is shown in the picture below. Prisms can both bend and/or reflect light. Telescopes, cameras, and supermarket laser scanners use prisms of different shapes to bend and reflect light in precise ways. A diamond is a prism with many flat, polished surfaces. The “sparkle” that makes diamonds so attractive comes from light being reflected many times as it bounces around the inside of a cut and polished diamond.
Here is a textbook you can use as an extra resource. It has great explanations and diagrams on pages 555-565. This will help you with the lab questions!
Week 25, Day 1
Table of Contents
1) Title p. 102: How Do Reflection and Refraction Work?
2) Record the date
3) Record and highlight the goal question: What is the difference between reflection and refraction?
4) Click a link to play one of these mirror reflection games:
http://www.sciencekids.co.nz/gamesactivities/howwesee.html
http://games.erdener.org/laser/
5) After trying to achieve the different goals set by the game, go to the top of page 102 and copy down this question:
What do you notice about how the light reflects off of the mirror?
6) Make sure you answer using COMPLETE sentences.
Task 1:
1) Title the next part of the page: "Reflection Demonstration"
2) As I use a laser pointer and a mirror, draw a quick picture of what happens. LEAVE ROOM TO WRITE!
3) After the demo and our discussion of it, use Claim-Reason-Evidence to explain what happened.
Claim: When light hits a mirror, it...
Reason: This happens because...
Evidence: I know this because...
Task 2:
1) Title the next part of the page: Law of Reflection
2) Copy this down: The Law of Reflection states that the angle of incidence equals the angle of reflection.
3) Then use a protractor to draw a diagram that shows this.
Task 3:
1) Title the top of page 103: Refraction Demo
2) After we watch the demo and discuss it, draw an image that shows what happened.
3) Use claim-reason-evidence to explain what happened.
Claim: When light moves from air into another object, it...
Reason: This happened because...
Evidence: I know this because...
Closure: bottom of p. 103
Go back to the goal at the top of the page. Have you achieved it? Can you explain how reflection and refraction are different?
In the empty space at the bottom of the page, write a sentence that explains the difference between reflection and refraction.
Homework:
1) Prepare for the quiz we'll have in our next class
- What is a wave?
- How do we label the parts of a wave?
- What are the types of waves in the electromagnetic spectrum? - name them in order (longest wavelength to shortest and vise versa)
- What is a use for each type of EM wave?
- What are the primary colors of light? How do they combine to make other colors?
- What are all of the colors in the color spectrum?
- Why do objects look the color they do?
Week 25, Day 2
PTT:
Review for quiz
Complete practice writing frame
Task 1:
Take quiz
Task 2:
Color images on the cover of the unit to represent what we've learned about light so far.
Week 25, Days 3-4
PTT:
Take 5 minutes to read through the resources below. A lot of this is new information and vocabulary you will be using in the next 2 classes while we do a lab investigation.
Basic Optical Devices - Lenses, Mirrors, Prisms
Lenses
A lens bends light in a specific way. A convex lens (converging lens) bends light so that the light rays come together in a point. This is why a magnifying glass makes a hot spot of concentrated light (Figure 10.17). Aconcave lens (diverging lens) bends light so it spreads light apart instead of bringing it together. An object viewed through a diverging lens appears smaller than it would look without the lens.
Mirrors
A mirror reflects light and allows you to see yourself. Flat mirrors show a true-size image. Curved mirrors distort images. The curved surface of a fun house mirror can make you look appear thinner, wider, or even upside down! Mirrors can have a concave and convex shape similar to the lens. Here is the law of reflection for a flat mirror.
"Fun House" Mirrors
Concave Mirror (Reflects Light)
Convex Mirror (Reflects Light)
Prisms
A prism is usually made of a solid piece of glass with flat polished surfaces. A common triangular prism is shown in the picture below. Prisms can both bend and/or reflect light. Telescopes, cameras, and supermarket laser scanners use prisms of different shapes to bend and reflect light in precise ways. A diamond is a prism with many flat, polished surfaces. The “sparkle” that makes diamonds so attractive comes from light being reflected many times as it bounces around the inside of a cut and polished diamond.
Task 1:
Lab #1: Under what conditions does light bend?
LOOKING AT REFRACTION AND REFLECTION
You will need a protractor and ruler for this lab!
All labs will be completed on a large white piece of paper.
Purpose: To investigate the ways in which light reflects/refracts from different shapes of mirrors and lenses.
Reflection and Refraction Labs
Here is a textbook you can use as an extra resource. It has great explanations and diagrams on pages 555-565. This will help you with the lab questions!
Lab # 2: Mirror Maze
See directions within the google doc above.
It should look a little something like this!