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Warm-UP Exercise

Warm-UP Exercise. Complete this week’s CRCT warm-ups. The worksheet will be collected today so be sure your name is on the worksheet. CRCT Warm-UP.

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Warm-UP Exercise

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  1. Warm-UP Exercise Complete this week’s CRCT warm-ups. The worksheet will be collected today so be sure your name is on the worksheet.

  2. CRCT Warm-UP • Gravitational force between two masses ______ as the distance between the masses decreases and rapidly ______ as the distance between the masses increases. • increases, increases • decreases, decreases • decreases, increases • increases, decreases

  3. CRCT Warm-UP • Two forces are acting on an object, but the net force on the object is 0 N. For the net force to be 0 N, all the forces on the object must cancel. What must be true for the two forces on the object to cancel? • A. The forces are the same size and in the same direction. • B. The forces are different sizes and in the same direction. • C. The forces are the same size and in opposite directions. • D. The forces are different sizes and in opposite directions.

  4. CRCT Warm-UP • Which of the following always causes change in speed, direction, or both? • balanced forces • unbalanced forces • either balanced or unbalanced forces • more than three forces

  5. CRCT Warm-UP • During a space shuttle launch, about 830,000 kg of fuel is burned in 8 min. The fuel provides the shuttle with a constant thrust, or forward force. How does Newton’s second law of motion explain why the shuttle’s acceleration increases as the fuel is burned?

  6. CRCT Warm-UP • Suppose you are standing on a skateboard or on in-line skates and you toss a backpack full of heavy books toward your friend. What do you think will happen to you? Explain your answer in terms of Newton’s third law of motion.

  7. Fan-n-Pick Student #1 – Fans the cards face down Student #2 – Picks a card and read the question; pass card to student #4 Student #3 – Answers the question Student #4 – Praise if correct or tutor if wrong Rotate positions; repeat until all twelve cards are used!

  8. Science Standard • S8P4. Students will explore the wave nature of sound and electromagnetic radiation. • f. Diagram the parts of the wave and explainhow the parts are affected by changes in amplitude and pitch.

  9. Essential Question What characteristic of a wave – wavelength, amplitude, or frequency – make a tsunami so destructive? http://www.cnn.com/

  10. Review: Mechanical Waves • Cause rhythmic disturbances in a medium • Travel through a medium • Transmit energy • Leave the medium unchanged.

  11. Review: Finding wave velocity An ocean wave has a length of 10.0 m. Two waves pass a fixed point every 1.0 s. What is the speed of the wave? (Hint: Determine the frequency of the wave first.) 2 waves = 2 hertz 1.0 s

  12. Review: Finding wave velocity An ocean wave has a length of 10.0 m. Two waves pass a fixed point every 1.0 s. What is the speed of the wave? (Hint: Determine the frequency of the wave first.) Find: ________ Formula: ___________________ Given: Apply & Solve

  13. Characteristics of a Compressional or Longitudinal Wave Compression – crowded or dense area Rarefaction – less dense or spread out area

  14. Characteristics of a Compressional or Longitudinal Wave Wave Cycle – one compression and one rarefaction

  15. Characteristics of a Compressional or Longitudinal Wave Wavelength – distance between two compressions

  16. Characteristics of a Compressional or Longitudinal Wave Amplitude – measure of the amount of compression; depends on the amount of energy being transferred

  17. Characteristics of a Compressional or Longitudinal Wave Frequency – number of compressions that pass a stationary point in one second

  18. Complete the Mechanical Wave Graphic Organizer

  19. Mechanical Wave Map Find a partner. Use your notes and your brains to complete the mechanical wave map.

  20. Compare & Contrast Work with your cooperative team to create the best map comparing transverse and longitudinal waves!

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