Friday, March 4, 2011Integrated Science B

Final Exam Review

Brain-Based EmphasisInkster High School

Mrs. Gall

Friday, March 4, 2011

• DO NOW: Highlight or circle the words ACT NOW on your handout. Read the required activities for today’s class activity.

• HOMEWORK: Complete and Study Review

• AIMS:– The Learner Will Understand the nature of science and demonstrate an

ability to practice scientific reasoning by applying it to final exam review exercises. (HSSCEs: P1 and P2: Inquiry, Reflection, and Social Implications)

Friday, March 4, 2011. LESSON STEPS.

1. Complete today’s DO NOW activity in writing. 2. Review Lesson Steps.3. Discuss DO NOW activity. 4. Frontal teaching: Complete Interactive

Review Handout5. Homework: Complete and Study Review

Handout

Point at the highest frequency

Point at the highest frequency

FREQUENCY!

• Less cycles = less Hertz• More cycles = more Hertz

• The more you cycle, the more it “HERTZ”

FREQUENCY!

• Less cycles = less Hertz• More cycles = more Hertz

• FREQUENCY!• The more you cycle, the more it “HERTZ”

Hertz is measured in cycles per second

ACT NOW.

• Use your hand to swing an imaginary jump-rope at a speed of one circle per second.

• (FREQUENCY = 1 HERTZ)

• Use your hand to swing an imaginary jump-rope at a speed of three circles per second.

• (FREQUENCY = 3 HERTZ)

Make a high frequency sound.

Make a low frequency sound.

A bat uses sonar to “sense” an insect. The bat uses the echo from a high frequency wave to locate objects.

A WAVE REFLECTS (BOUNCES) OFF OF A SOLID SURFACE:

ACT NOW.

• You are going to “be a bat” with sonar:• Touch your nose.• Slowly bring that finger to touch the tabletop

nearest to you.• Bring that finger back to your nose at the

same slow speed.

• You just modeled LOW FREQUENCY sonar.

ACT NOW.

• You are going to “be a bat” with sonar:• Touch your nose.• Quickly bring that finger to touch the tabletop

nearest to you.• Bring that finger back to touch your nose at

the same FAST speed.

• You just modeled HIGH FREQUENCY sonar.

A bat uses sonar to “sense” an insect. The bat uses the echo from a high frequency wave to locate objects.

Can we HEAR sound in space?

NO.

Sound requires a MEDIUM – matter- to move.Atoms bump each other like dominoes…

Can we SEE light in space?

YES. We can see our sun and the stars.

ELECTROMAGNETIC WAVES

If it doesn’t require a MEDIUM…

Then it must be an “electromagnetic wave”:LightRadioInfraredUltraviolet

Wave Anatomy:

Correct Names for Wave Parts

Lots of Labeled Waves:

Even More Labeled Waves:

ACT NOW.

• Use your finger to trace the shape of a wave on an imaginary whiteboard.

ACT NOW.

• Draw a VERY LONG wavelength.• Try again. Draw MANY SHORT wavelengths.

ACT NOW.• Draw some VERY HIGH amplitudes.• Try again. Draw some very low (short)

amplitudes.

ACT NOW.

• Use your finger to trace the shape of a wave on an imaginary whiteboard.

ACT NOW.

• Say “crest” when your finger is at the top of each wave.

• Say “trough” (‘TROFF’) at the bottom of each.

ACT NOW.

• Keep tracing: “crest- trough- crest- trough”

Give “deuces” to the longest wavelength

Give “deuces” (“peace”) (first and middle finger) to the longest wavelength

Rainbows and White Light

White Light REFRACTS when it travels through a solid.

White Light is a combination of all colors of the rainbow

Waves REFRACT when they travel from one type of matter to

another

When a wave bends at a boundary, we say it REFRACTS

Form: HeatSource: Stove burnerUses: Heating food

Why is the sky blue?

Why is the sky blue?

Why is the sky blue?

In the MEDIUM of our atmosphere, BLUE wavelengths of visible light scatter (refract) more than other colors.

• What is Amplitude (related to waves)? What is Frequency (related to waves) and the unit we use to measure it? What is Wavelength (related to waves)? What is Refraction? What is Reflection? What is an Echo? What happens when all wavelengths of light are absorbed? What happens when all wavelengths of light are reflected and you see all the colors combined? What wavelength (color) of light is scattered the most? What wavelength (color) of light is scattered the least? Are they longer or shorter than other wavelengths? Why does the sky appear blue? Why does the sun appear more red at sunset? Name two things that sound waves can travel through. What is the Law of Conservation of Energy? What is an open circuit? Does current flow in an open cirucuit? When you think of organic compounds, think of the phrase "CHOw down" What three elements must be in a compound for it to be organic? What is a direct relationship? Draw a simple picture to show it.

Scientific relationshipsVariables going the same way is

what kind of relationship?Direct relationship

Scientific relationshipsVariables going the opposite way

is what kind of relationship?Indirect or Inverse relationship

• Amber notices that she sweats a lot when she runs fast. When she walks fast, she sweats a little, and when she walks, she is a little bit warm. Amber also notices that she feels cold when she is not moving. Just for fun, she creates a data table and graph.

Your Homework:

1. Draw a wave and label its parts.2. Compare frequency and wavelength using a

double-bubble thinking map.3. Give an example of a direct relationship.4. Explain how bats sense insects’ locations.5. Define and give an example of a MEDIUM.

What kind of wave does not require a MEDIUM? Give several examples of this.

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Mrs. Gallappleforteacher@hotmail.com