- Infrared, Visible Light and Ultraviolet and Microwaves are all important forms of radiation. Which of the following statements regarding radiation is incorrect. Carbon dioxide and other greenhouse gases heat up the atmosphere by absorbing specific frequencies in the Infrared portion of the electromagnetic spectrum. Microwaves are able to heat food because their frequency can cause water molecules to vibrate and rotate. Solar panels work because Ultraviolet light is able to free electrons from the surfaces of certain metals. We see color based on the wavelength of visible light that is absorbed by objects.
- If a sidewalk in direct sunlight is "hot enough to cook an egg'this is because of Ultraviolet Radiation Infrared Radiation Radio Waves Visible Light
- (1) 13) Solve the following word problem. Manuel and Daniel are playing catch with a football. They are standing 30 meters apart. Daniel, and it takes 3 seconds for the ball to reach Daniel. How fast is the ball going? 10m/s ) 1m/s 90m/s 0.1m/s
- Question 16 (1 point) 1 Listen If a gas is in a cylinder with a capacity of 1 ft3 and a temperature of 60 degrees Fat a pressure of 100 psiz is heated to 200 degrees F. what is the new pressure? square A.
- 13. Describe how a fluorescent light bulb produces light. 14. What three things can happen when light strikes an object? 15. Using labelled diagrams. show the difference between transparent, translucent and opaque objects. 16. A basketball does not give off light.Explain how you are able to see a basketball. 17. Classify each of the following types of light according to its source: a) Firefly b) lightning c) glowstick 18. List the seven colours (in order) that make up the visible portion of the electromagnetic spectrum. 19. List 5 devices that you encounter that make use of electromagnetic waves. 20. List the properties of light, and provide a brief description of each.
