1. How are different types of radiation arranged along the electromagnetic spectrum? A. By how fast they travel incorrect answer B. By their sources incorrect answer C. By the amount of energy they carry incorrect answer D. By how radioactive they are incorrect answer 2. Place the following types of EM radiation in order, from lowest energy to highest energy: A) Visible light; B) Gamma rays; C) Radio waves A. A, C, B B. C, A, B C. B, C, A D. C, B, A 3. Astronomers often scan the sky using devices called radio telescopes. What can you conclude about these devices? A. They send radio broadcasts out to distant stars and planets. B. They pick up the radio waves emitted by stars C. They are less powerful than optical telescopes D. They can detect ultraviolet radiation. 4. Which word best describes gamma rays? A. Weak B. Destructive C. Visible D. Harmless 5. What do all forms of electromagnetic radiation have in common? A. Their strength B. Their speed C. Their wavelength D. Their frequency
6. Which lab activity from class would provided evidence that different light sources and different materials have different spectras (light signatures)? Activity: Supporting evidence from that activity: 7. List all the ways we discussed and read about in class that astronomers can learn about objects and places in space, especially the ones that are too far for humans to travel to. 8. We investigated different ways that astronomers hunt for water in the solar system and beyond. List all the lab activities we did in class to demonstrate this. Explain how each activity helps astronomers find evidence of water out in space.
DIRECTIONS: Use your notes from 9 10 and the terms in the vocabulary box to fill in the blanks for the following nine questions. You will not need to use every term. Vocabulary Electromagnetic radiation Gamma rays Radiant energy Visible light Electromagnetic spectrum Infrared waves Radio waves Wavelength Frequency Microwaves Ultraviolet rays X-rays 9. The represents the different forms of electromagnetic radiation. 10. Light is classified as because electrical and magnetic fields vibrate in a light wave. 11. is energy that travels by radiation. An example of this is light. 12. Heat radiation, also known as, cannot be seen by your eyes but can be felt by your skin. 13. Microwaves are one type of. 14. can be used to communicate with satellites. 15. Because have the highest energy of all electromagnetic radiation, they are the most damaging to human tissue. 16. Compared to all other types of electromagnetic radiation, radio waves have the lowest. 17. An overexposure to can result in sunburns and skin cancer.
18. Match the kind of Electromagnetic Radiation (on the left) likely to be used in each of the following technologies (on the right). Each Technology may be used only once. Electromagnetic Radiation X-rays Microwaves Gamma rays Radio waves Infrared waves Ultraviolet waves A. TV broadcast signals Technology B. In a hospital to keep surgical equipment sterile. C. Examining the inside of a weld in a steel oil pipe D. Lamp used to warm a baby chick E. Measuring the speed of a passing car F. Used by an oncologist (a physician who studies and treats cancer) DIRECTIONS: Read the statements given below. If the statement is true, write T on the line in front of the statement. If it is false, write F and correct the statement to make it true. 19. Radiant energy spreads out from its source in all directions. 20. Electromagnetic radiation includes only visible light waves. 21. Microwaves are a type of infrared wave. 22. X rays have more energy than gamma rays. 23. Radio waves, microwaves and ultraviolet waves all have longer wavelengths than visible light. 24. Both X-rays and gamma rays have higher frequencies than UV rays. 25. The Sun radiates both visible energy and invisible energy. 26. Communicating with satellites is an application of gamma rays.
27. Which of the following energies has the LONGER wavelength in the diagram? (Circle the best choice.) Radio or Infrared waves 28. Which of the following energies has the SHORTER wavelength in the diagram? (Circle the best choice.) X-Ray or Microwave 29. Which color of the visible light waves has the highest energy level in the diagram? (Circle the best choice.) Red Orange Yellow Green Blue Violet 30. The shorter the wavelength between waves, the higher its. 31. waves have the highest frequency and carry the most energy. 32. waves are a type of energy that can penetrate materials and get a picture of what is located inside. These are used by doctors and security at airports. 33. waves are the ONLY energy frequencies humans can see. 34. waves (heat) have a wavelength just larger than the color red. 35. waves (cause skin burn) have a wavelength just shorter than the color violet. 36. The wave that has the longest wavelength and lowest frequency is waves.