Friday, April 10, 2015 Do Now: Jordan wants to design an experiment after hearing a commercial for...

Friday, April 10, 2015• Do Now: Jordan wants to design an

experiment after hearing a commercial for the “Best flower fertilizer this side of the Mississippi! Watch the flowers grow taller by the day!” He decides to test the commercial's ad against three other fertilizers. Identify the QUESTION, VARIABLES, and TYPE OF GRAPH for Jordan’s experiment.

Lab Design• Question: Which type of fertilizer will

make the flower grow tallest?• Variables:– IV: Type of fertilizer (FOUR test groups,

ONE control without fertilizer)– DV: The height of the flowers– Control: Type of flower, soil, water, light,

days observed

• Graph: line graph

Yesterday’s Lab:• QUESTION: What shape fin will enable a

rocket to fly to the highest altitude?• VARIABLES:– IV: shape of fin (three different fins, one with

no fins)– DV: altitude of flight– Controls: rocket other than fins, weather,

wind, temperature, launcher (water pressure)

• GRAPH: bar graph

Double Trouble

Energy and Waves

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Types of Energy

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Waves

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Electromagnetic Spectrum & Light

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Energy Transformations

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Types of Energy Waves Electro. Spectrum & Light

Energy Transformations

Main Board

Stored energy within an object; form when object

is at rest

Potential energy

Energy present when an athlete throws a football

Mechanical energy

Energy present when a person eats food; also found within a battary

Chemical energy

The sun

Nuclear energy

Double or Nothing

Choose whether or not you would like a follow up question and risk all what you just won.

400

Double or Nothing

Name three sources of renewable energy

Sun, wind, water, geothermal, biomass

T/F: nonrenewable energy is ideal because it

is cheap and doesn’t harm the environment

false

Two main types of waves defined by their motion

Transverse and longitudinal

The distance between two crests

wavelength

as the wavelength gets shorter, what happens to the frequency of a wave?

the frequency increases

As the amplitude of a wave increases, what is

true about a wave’s energy?

the energy increases

Lightning Question

As the frequency of a sound wave

increases, explain the change(s) that

occurs to the sound

The pitch increases

As the frequency increases on an electromagnetic wave,

what happens to the radiation (energy) level of the wave?

The radiation (energy) level increases

What wave behavior is depicted below?

diffraction

John is wearing a black shirt and Susan is wearing

a white shirt. Why will John be hotter in the sun?

John’s dark shirt is opaque. Opaque matter can either absorb

light or it can reflect light. Because John’s shirt is black, it will absorb

all the wavelengths of color in white light, trapping the heat

inside. Susan’s shirt will reflect all colors.

If Mrs. John sees a color with a wavelength of 400

nm, then she is most likely looking at the color:

Violet(ROYGBIV!!!)

What light behavior, also true of sound waves, is

depicted below?

reflection

Double or Nothing

Choose whether or not you would like a follow up question and risk all what you just won.

500

Double or Nothing

Explain the behavior of light as it passes through a prism.

As white light passes through a prism, the wavelengths are bent by refraction because they slow down as they enter new medium. The colors

separate because each has a different wavelength

From the apple to the biker and from the gas to the car, what energy transformation

is taking place?

Chemical energy motion (kinetic) energy

What is the renewable source of energy for this

system?

Wind energy

Lightning Question

At what point in a hydroelectric power plant is energy transformed

into electricity?

The generator transforms the energy into electricity

As the skater goes down the ramp, what can we expect his

Kinetic and Potential energy to do?

Kinetic energy will increase and potential energy will decrease

If the skater has motion on a ramp, describe his location at

points I, II, III and IV *There could be multiple answers for III and IV.

Double Trouble

ROUND 2

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Waves

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Technology

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Energy Transformations

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Heat Transfer

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Waves TechnologyEnergy

Transformations Energy and Me

Round 2

What makes the wave below transverse?

The wave is transverse because the motion of the energy is perpendicular to the motion of the matter

How are mechanical waves and

electromagnetic waves different?

Mechanical wave – requires a medium to move energy

Electromagnetic wave – can move energy through a

medium but does not require it

Lightning Question

Draw 2 diagrams of 2 sound waves with the same pitch but different volumes.

See Mrs. John

Fill in the blanks with examples:

Mechanical Electromagnetic

Transverse ? ?

Longitudinal Sound Waves N/A

Combination Ocean Waves N/A

Mechanical Electromagnetic

Transverse Flag waving Light waves

Longitudinal Sound Waves N/A

Combination Ocean Waves N/A

What light behavior is depicted below?

refraction

Explain how SONAR works.

Sound waves are sent to the bottom of the ocean floor. They are then reflected and return to the SONAR on a ship. The time it takes for the wave to be sent and

return is divided by 2 and used to determine the distance between the ship

and an obstacle. This is then used to create a map.

Explain how ultrasound technology works.

What type of electromagnetic wave is used in a remote

control?

infrared

What does an amplifier do?

An amplifier increases the power of a wave increases

the amplitude increases the volume capability

Double or Nothing

Choose whether or not you would like a follow up question and risk all what you just won.

400

Double or Nothing

How do telescopes work?

Most collect and focus electromagnetic waves

How is a visible light telescope different than

a radio telescope?

Visible light telescopes gather light and radio

telescopes gather radio waves

Where does the roller coaster have the greatest

potential energy?

At the highest point on the track (the very

beginning).

At what point in the Rube Goldberg contraption is chemical energy transformed into heat energy

(thermal)?

Why does the total energy never change?

The total energy never changes because of the Law of Conservation of Energy, which

states energy can not be created or destroyed.

Lightning Question

When a boy tosses a ball up in the air, at what point does the

ball have the greatest kinetic energy?

Right after the boy lets go and right before the ball lands on the ground

As Mrs. John pulls back on a rubber band, ready to fire at the talking

student, what happens to the elastic potential energy of the rubber band, and what will happen when she lets

go?

The EPE increases and the rubber band will fly further across the room because it

now has more kinetic energy capability.

The metal rod gets hot because of:

conduction

A marshmallow held above a campfire cooks

through this form of heat transfer:

radiation

A hot coffee mug is left on a table for 10 minutes. What

will most likely happen to the cup and to the table during

that time period?

The mug’s temperature will decrease and the table temperature will increase

because of conduction.

Earth’s global temperatures are moderated and

maintained by which form of heat transfer?

Convection (ocean and wind currents)

In this convection lab, the red water is hotter than the blue

water. After about ten minutes, where can we expect to see the

hot water and the cold water within the tank?

The hot water (red) will be at the top of the tank and the

colder water (blue) will be at the bottom because the

currents move hotter, denser fluid up (rises)

Double or Nothing

Choose whether or not you would like a follow up question and risk all what you just won.

500

Double or Nothing

What method of heat transfer is evident in the before

mentioned lab?

convection

Double Down

If white light strikes an object and we see red reflected, what

color is the object?

A clear window that allows all light to pass through is an example of…

Reveal Questions

How high or low (not loud) a

sound is

Reveal Questions

The amount of energy a wave

carries depends on its…

Why do objects appear as

different colors?

Reveal Questions

The ability to make change

What is sound? Longitudinal waves are also

called _________.

Reveal Questions

What two factors is Kinetic Energy dependent on?

What two factors is Potential

Energy dependent on?

Reveal Questions

End