PTT: Make sure you have the page set up 1) Turn to page 121 2) Title it: The Colors of Objects3) Record the date: W8, D14) Write down the goal - Goal: I can explain why objects appear to be different colors.5) Read this:NOTE: We've talked about how the colors we see are the colors of light that objects reflect. Example: the blue chairs in the classroom absorb all the colors except blue and reflect the blue light back to our eye. NOTE: We talked about how black objects absorb all the colors of light, which is why you feel hotter when wearing black in the summer. NOTE: We talked about how white objects reflect all the colors. Task 1: Draw pictures Draw a selection of following pictures to show the colors of light that objects reflect (use the ones below for inspiration). You need at least 4 drawings - make sure a black object and a white object are two of them. USE YOUR COLORS TO DRAW THE PICTURES!
NOTE: you have 8 minutes to complete this task!
Color Reflection - white object.jpg
Color Reflection - absorbs.jpg
Color Reflection - leaf.jpg
Color Reflection - apple.jpg
Task 2: Summing up the diagrams 1) Write a brief description next to each picture to explain what is happening (ex: blue ball reflects blue light wavelength) 2) At the bottom of page 120, write a summary statement that explains what the pictures show us. Use the word WAVELENGTH in your answer.Possible sentence starter: In these pictures, we can see that objects appear a certain color because...3) Reflect back to the goal on the top of page 121 - can you explain why objects appear to be different colors? Task 3: Speaking of reflection 1) Complete the two probes about reflection (Can It Reflect Light AND Mirror on the Wall) 2) Turn back to p. 117 - reread your definitions for reflection, absorption, transmission, and scattering. Make sure you understand why scattering is a type of reflection (called diffuse reflection). Task 4:1) Turn to p. 122 2) Title the page: How Does Reflection Work?3) Record the date:W8, D14) Record the goal - Goal: I can explain why light reflect the way it does. Task 5:1) Click the link to play this mirror reflection game: http://www.sciencekids.co.nz/gamesactivities/howwesee.html 2) After trying to achieve the different goals set by the game, go to the top of page 122 and copy down this question:What do you notice about how the light reflects off of the mirror?3) Make sure you answer using COMPLETE sentences. Task 6:
1) Now try using the mirrors in a different game - this one using lasers to light up light bulbs. Play until there is FIVE minutes left of class. At that point, note down what level you got to during the class period.http://games.erdener.org/laser/ Closure: 1) Add another sentence to your answer from Task 5. Was it the same between both games?
2) Reflect back (jaja - reflect, get it?) to the beginning of class when you finished learning about light and color. What does this have to do with reflection? Talk to a seat partner to explain your thinking.
Week 8, Day 2
PTT:Click this link to take a look at the basic optical devices Task 1:Watch the Bill Nye video to get an overview of light opticsWrite down 5 things you learn about reflection on p. 122 in your science notebook Closure:What is one question you have based upon what we saw in the video? Record this on p. 122 in your science notebook.
Week 8, Day 3
PTT:1) Let's do some review. Click the link and read over the introduction. Later you will follow along as I present to the class: The Primary Colors of Light & Pigment (go to p. 120 in your notebook to add any important notes)2) Let's not forget waves and the electromagnetic spectrum! We'll review them here: NASA's EM Spectrum Video and Self-Guided Tour of the EM Spectrum (go to p. 115 in your notebook to add any important notes) Task 1:1) Turn to page 123.2) Record the date in the top corner: W8, D33) Record the title: How Do Reflection and Refraction Work?4) Record the goal - Goal: I can explain the difference between reflection and refraction.5) Divide the pages into 4 boxes BUT leave 3 lines empty at the bottom of the page. Task 2:1) Title BOX 1: "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 3:
1) Title BOX 2: Law of Reflection
2) Copy this down into BOX 2: 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.
The Law of Reflection states that the angle of incidence equals the angle of reflection.
Task 4:
1) Title BOX 3: 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:
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.
Week 8, Day 4
PTT:
1) Open your science notebook to page 123
2) You should have boxes 1 and 2 complete.
3) Now go to box 3 and title it Refraction Demo. We saw the refraction demo in our last class.
4) Draw a picture that represents what happens to the test tube in water vs. the test tube in the cooking oil. Be sure to LABEL the two pictures.
5) 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...
Task 1:
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.
Task 2: Read the following 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). A concave 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.
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.
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.
Task 3: Lesson - Lens, Mirrors and Prism Lab
Lab #1: Under what conditions does light bend?
LOOKING AT REFRACTION AND REFLECTION
Purpose: To investigate the ways in which light reflects/refracts from different shapes of mirrors and lenses.
Week 8, Day 1
PTT: Make sure you have the page set up 1) Turn to page 121 2) Title it: The Colors of Objects 3) Record the date: W8, D1 4) Write down the goal - Goal: I can explain why objects appear to be different colors.5) Read this:NOTE: We've talked about how the colors we see are the colors of light that objects reflect. Example: the blue chairs in the classroom absorb all the colors except blue and reflect the blue light back to our eye. NOTE: We talked about how black objects absorb all the colors of light, which is why you feel hotter when wearing black in the summer. NOTE: We talked about how white objects reflect all the colors.
Task 1: Draw pictures Draw a selection of following pictures to show the colors of light that objects reflect (use the ones below for inspiration). You need at least 4 drawings - make sure a black object and a white object are two of them. USE YOUR COLORS TO DRAW THE PICTURES!
NOTE: you have 8 minutes to complete this task!
Task 2: Summing up the diagrams 1) Write a brief description next to each picture to explain what is happening (ex: blue ball reflects blue light wavelength) 2) At the bottom of page 120, write a summary statement that explains what the pictures show us. Use the word WAVELENGTH in your answer.Possible sentence starter: In these pictures, we can see that objects appear a certain color because...3) Reflect back to the goal on the top of page 121 - can you explain why objects appear to be different colors?
Task 3: Speaking of reflection 1) Complete the two probes about reflection (Can It Reflect Light AND Mirror on the Wall) 2) Turn back to p. 117 - reread your definitions for reflection, absorption, transmission, and scattering. Make sure you understand why scattering is a type of reflection (called diffuse reflection).
Task 4:1) Turn to p. 122 2) Title the page: How Does Reflection Work?3) Record the date:W8, D14) Record the goal - Goal: I can explain why light reflect the way it does.
Task 5:1) Click the link to play this mirror reflection game:
http://www.sciencekids.co.nz/gamesactivities/howwesee.html
2) After trying to achieve the different goals set by the game, go to the top of page 122 and copy down this question:What do you notice about how the light reflects off of the mirror?3) Make sure you answer using COMPLETE sentences.
Task 6:
1) Now try using the mirrors in a different game - this one using lasers to light up light bulbs. Play until there is FIVE minutes left of class. At that point, note down what level you got to during the class period.http://games.erdener.org/laser/
Closure:
1) Add another sentence to your answer from Task 5. Was it the same between both games?
2) Reflect back (jaja - reflect, get it?) to the beginning of class when you finished learning about light and color. What does this have to do with reflection? Talk to a seat partner to explain your thinking.
Week 8, Day 2
PTT:Click this link to take a look at the basic optical devices
Task 1:Watch the Bill Nye video to get an overview of light opticsWrite down 5 things you learn about reflection on p. 122 in your science notebook
Closure:What is one question you have based upon what we saw in the video? Record this on p. 122 in your science notebook.
Week 8, Day 3
PTT:1) Let's do some review. Click the link and read over the introduction. Later you will follow along as I present to the class: The Primary Colors of Light & Pigment (go to p. 120 in your notebook to add any important notes)2) Let's not forget waves and the electromagnetic spectrum! We'll review them here: NASA's EM Spectrum Video and Self-Guided Tour of the EM Spectrum (go to p. 115 in your notebook to add any important notes)
Task 1:1) Turn to page 123.2) Record the date in the top corner: W8, D33) Record the title: How Do Reflection and Refraction Work?4) Record the goal - Goal: I can explain the difference between reflection and refraction.5) Divide the pages into 4 boxes BUT leave 3 lines empty at the bottom of the page.
Task 2:1) Title BOX 1: "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 3:
1) Title BOX 2: Law of Reflection
2) Copy this down into BOX 2: 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 4:
1) Title BOX 3: 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:
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.
Week 8, Day 4
PTT:
1) Open your science notebook to page 123
2) You should have boxes 1 and 2 complete.
3) Now go to box 3 and title it Refraction Demo. We saw the refraction demo in our last class.
4) Draw a picture that represents what happens to the test tube in water vs. the test tube in the cooking oil. Be sure to LABEL the two pictures.
5) 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...
Task 1:
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.
Task 2: Read the following
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). A concave 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 3:
Lesson - Lens, Mirrors and Prism Lab
Lab #1: Under what conditions does light bend?
LOOKING AT REFRACTION AND REFLECTION
Purpose: To investigate the ways in which light reflects/refracts from different shapes of mirrors and lenses.
Here is a textbook you can use as an extra resource. It has great explainations and diagrams to help you with the lab questions!
Lab #2: Investigation - Mirror Maze
It should look something like this!