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Published byBruno Higgins Modified over 9 years ago
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10/14 & 10/15 - 7th Grade Agenda Payday Collect: HW: p.41- 44
Mirrors & Eye Measuring Liquid Volume Lab Class Reading: p HW: Workbook: p
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Reflection Reflection occurs when an object or wave bou_____ back off a surface through which it cannot pass. nce
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Concave Mirror
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Convex Mirror
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Refraction Bending of light waves due to change in spe____ is known as refraction ed
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Why does this pencil appear broken?
Because light slowed down as it entered the glass as water
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Convex Lenses
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Concave Lenses produces smaller image
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Parts of the Eye
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Nearsightedness
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Farsightedness
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Graduated Cylinder When measuring liquids in a graduated cylinder, the
measurement should be taken at the bottom of the curve called the meniscus
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How much liquid is in this graduated cylinder?
52.8 ml 54 53 52 51
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How much liquid is in this graduated cylinder?
6.62 ml 7 6.8 6.6 6.4 6.2
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How much liquid is in this graduated cylinder?
11.5 ml 14 13 12 11
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What is the correct way to read a graduated cylinder?
B C Why?
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Is this a right way to take measurement from a graduated cylinder?
Why
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Measuring Liquid Volume Lab
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Galileo’s Telescope He was the first man to observe the moons of Jupiter and craters on the moons with a telescope in 1608
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What is a Refracting Telescope?
A telescope that uses convex lenses to gather a large amount of light onto a small area
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What is a Reflecting Telescope?
A telescope that uses mirrors to focus a large amount of light onto a small area
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What is the difference between refracting and reflecting telescope?
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What is a Radio Telescope
A telescope that uses curved, reflecting surfaces to concentrate faint radio waves from outer space onto small antennas
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Four views of the Crab Nebula using different telescopes
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