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10/14 & 10/15 - 7th Grade Agenda Payday Collect: HW: p

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Presentation on theme: "10/14 & 10/15 - 7th Grade Agenda Payday Collect: HW: p"— Presentation transcript:

1 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

2 Reflection Reflection occurs when an object or wave bou_____ back off a surface through which it cannot pass. nce

3 Concave Mirror

4 Convex Mirror

5 Refraction Bending of light waves due to change in spe____ is known as refraction ed

6 Why does this pencil appear broken?
Because light slowed down as it entered the glass as water

7 Convex Lenses

8 Concave Lenses produces smaller image

9 Parts of the Eye

10 Nearsightedness

11 Farsightedness

12 Graduated Cylinder When measuring liquids in a graduated cylinder, the
measurement should be taken at the bottom of the curve called the meniscus

13 How much liquid is in this graduated cylinder?
52.8 ml 54 53 52 51

14 How much liquid is in this graduated cylinder?
6.62 ml 7 6.8 6.6 6.4 6.2

15 How much liquid is in this graduated cylinder?
11.5 ml 14 13 12 11

16 What is the correct way to read a graduated cylinder?
B C Why?

17 Is this a right way to take measurement from a graduated cylinder?
Why

18 Measuring Liquid Volume Lab

19

20 Galileo’s Telescope He was the first man to observe the moons of Jupiter and craters on the moons with a telescope in 1608

21 What is a Refracting Telescope?
A telescope that uses convex lenses to gather a large amount of light onto a small area

22 What is a Reflecting Telescope?
A telescope that uses mirrors to focus a large amount of light onto a small area

23 What is the difference between refracting and reflecting telescope?

24 What is a Radio Telescope
A telescope that uses curved, reflecting surfaces to concentrate faint radio waves from outer space onto small antennas

25 Four views of the Crab Nebula using different telescopes


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