TAKSTAKS

Warm-upsWarm-ups22ndnd 6 weeks physics 6 weeks physics

TEKS 4CTEKS 4C

Analyze the effects caused by changing Analyze the effects caused by changing force or distance in simple machines as force or distance in simple machines as demonstrated in household devices, the demonstrated in household devices, the human body, and satellite orbits.human body, and satellite orbits.

Which lever Which lever requires the requires the least effort to least effort to lift the load?lift the load?

Guiding question:Guiding question:

What is the meaning of work? What is the meaning of work?

State the definition of work to support your answerState the definition of work to support your answer

Motion is required for work to happenMotion is required for work to happen

TEKS 4DTEKS 4D

Investigate and demonstrate mechanical Investigate and demonstrate mechanical advantage and efficiency of various advantage and efficiency of various machines such as levers, motors, wheels machines such as levers, motors, wheels and axles, pulleys, and rampsand axles, pulleys, and ramps

mechanical advantagemechanical advantage

MA = effort distance / resistance distanceMA = effort distance / resistance distance

MA=length of slope/ height of slopeMA=length of slope/ height of slope

GUIDING GUIDING QUESTION:QUESTION:

How do How do machines machines make work make work easier?easier?

What is the ideal What is the ideal mechanical mechanical advantage of this advantage of this inclined plane?inclined plane?

a)a)840840b)b)4848c)c)33d)d)1/31/3

GUIDING GUIDING QUESTION:QUESTION:

How do How do machines machines make work make work easier?easier?

What is the ideal What is the ideal mechanical mechanical advantage of this advantage of this pulley system?pulley system?

a)a)44b)b)11c)c)RRd)d)00

What is the What is the mechanical mechanical advantage of this advantage of this pulley system?pulley system?

a)1a)1

b)5b)5

c)2c)2

d)4d)4

Calculate efficiencyCalculate efficiency

Work output / work input *100Work output / work input *100

GUIDING GUIDING QUESTION:QUESTION:

How do you How do you calculate calculate work, power, work, power, mechanical mechanical advantage advantage and and efficiency?efficiency?

Which of Which of these shows these shows a properly a properly balanced balanced system?system?

Which of Which of these shows these shows a properly a properly balanced balanced system?system?

TEKS 6ATEKS 6A

Describe the Law of Conservation of Describe the Law of Conservation of EnergyEnergy

TEKS 6BTEKS 6B

Investigate and demonstrate the Investigate and demonstrate the movement of heat through solids, liquids, movement of heat through solids, liquids, and gases by convection, conduction, and gases by convection, conduction, and radiation.and radiation.

Guiding question:Guiding question:

How does Bernoulli’s Principle explain How does Bernoulli’s Principle explain how an airplane flies? how an airplane flies?

According to Bernoulli, the faster a According to Bernoulli, the faster a fluid flows the less pressure it fluid flows the less pressure it exerts. In the diagram above, where exerts. In the diagram above, where is the air flow the slowest?is the air flow the slowest?

A) On the top B) on the bottom C) top and bottom are the A) On the top B) on the bottom C) top and bottom are the same same

Guiding question:Guiding question:

How would you compare buoyant force How would you compare buoyant force and density? and density?

Why does the rock in water Why does the rock in water weigh less than the rock in air?weigh less than the rock in air?

Guiding question:Guiding question:

How is gas affected by pressure, How is gas affected by pressure, temperature, and volume changes? temperature, and volume changes?

TEKS 6CTEKS 6C

Analyze the efficiency of energy Analyze the efficiency of energy conversions that are responsible for the conversions that are responsible for the production of electricity such as from production of electricity such as from radiant, nuclear and geothermal sources, radiant, nuclear and geothermal sources, fossil fuels such as coal, gas, oil, and the fossil fuels such as coal, gas, oil, and the movement of water or wind.movement of water or wind.

TEKS 6DTEKS 6D

Investigate and compare economic and Investigate and compare economic and environmental impacts of using various environmental impacts of using various energy sources such as rechargeable energy sources such as rechargeable and disposable batteries and solar cells.and disposable batteries and solar cells.

TEKS 6ETEKS 6E

Measure the thermal and electrical Measure the thermal and electrical conductivity of various materials and conductivity of various materials and explain results.explain results.

In addition, there will be one question on In addition, there will be one question on density and two on action reaction pairs density and two on action reaction pairs as review on this 6 weeks DCAas review on this 6 weeks DCA