CRT Study Guide A well-known scientist who built the most powerful microscope of his time was...
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![Page 1: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/1.jpg)
CRT Study Guide
• A well-known scientist who built the most powerful microscope of his time was __________________________.
• His invention was considered a major contribution to science.
![Page 2: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/2.jpg)
answer
van Leeuwenhoek
![Page 3: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/3.jpg)
question
• Bacteria, which is made of ____________ ___________, are known to be the simplest organisms.
![Page 4: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/4.jpg)
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single cells
![Page 5: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/5.jpg)
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• Most cells have a ___________. This cell structure is sometimes called the “brain” of the cell because its function (job) is to “control all of the cell’s activities.” It controls how and when the cell grows, develops, and divides.
![Page 6: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/6.jpg)
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nucleus
![Page 7: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/7.jpg)
question
• The __________ ____________ is a cell structure that is common to both plant and animal cells. Its function (job) in both is to “control the movement of substances into and out of the cell.”
![Page 8: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/8.jpg)
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cell membrane
![Page 9: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/9.jpg)
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• _____________________ is a jelly-like substance found in plant and animal cells. It fills most of the cell and has other cell structures floating in it. It is made up mostly of water.
![Page 10: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/10.jpg)
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cytoplasm
![Page 11: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/11.jpg)
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• When an organism is made up of many cells and different kinds of cells, each kind of cell has a special______________________. For example, blood cells have a different job than muscle cells. They each have a different job to do, and that keeps us alive and healthy.
![Page 12: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/12.jpg)
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function
![Page 13: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/13.jpg)
question
• There are two cell structures that are found ONLY in plant cells. They are ______ ________ and the ___________________. You will never find these cell structures in animal cells!
![Page 14: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/14.jpg)
answer
cell wall and
chloroplasts
![Page 15: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/15.jpg)
question
• When sunlight passes through a prism, the light _______________________________________ called the visible spectrum.
![Page 16: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/16.jpg)
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separates into different colors
![Page 17: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/17.jpg)
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•When light colors are ______________, we CANNOT see the color.
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absorbed
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question
•The “bending of light as it moves from one material to another” is known as ______.
![Page 20: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/20.jpg)
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refraction
![Page 21: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/21.jpg)
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• Farsighted means a person CAN see far away (distant) objects clearly, but close (nearby) objects look blurry. Glasses with ____________ lenses correct farsighted vision.
![Page 22: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/22.jpg)
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convex
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question
• The part of the eye that light passes through to help us see nearby objects is called the ____________.
![Page 24: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/24.jpg)
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• lens
![Page 25: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/25.jpg)
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• On a rainy day, you may observe a ______________ in the sky as light passes through raindrops. This is because raindrops are like tiny prisms in the air.
![Page 26: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/26.jpg)
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rainbow
![Page 27: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/27.jpg)
question
• If you see an object such as a green car, you know that the color green is the color that is reflected…not absorbed. You will not see the colors that are absorbed. Therefore, when you look at grass, you know that __________ is not absorbed.
![Page 28: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/28.jpg)
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green
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question
• The function of the _____________ in the human eye is to “control the amount of light that enters the pupil.”
![Page 30: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/30.jpg)
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iris
![Page 31: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/31.jpg)
question
• We know that a ___________ reflects the most light of common household objects. That is why you can see your own image, as well as other images of differing colors, in one.
![Page 32: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/32.jpg)
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mirror
![Page 33: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/33.jpg)
question
•The _________ is the part of the eye that bends light rays.
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cornea
![Page 35: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/35.jpg)
question
•The “bouncing back of light from a surface” is known as ________________.
![Page 36: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/36.jpg)
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reflection
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• When you see your image in a mirror, ________________ are bouncing back from the surface of the mirror. This is what allows you to see your reflection.
![Page 38: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/38.jpg)
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light rays
![Page 39: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/39.jpg)
question
• A person who can see nearby objects clearly but cannot see distant objects is nearsighted. A nearsighted person’s vision would be corrected by wearing glasses that have ____________ lenses.
![Page 40: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/40.jpg)
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concave
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question
• Tilting a mirror in front of your face so that you are changing the angle of the light ray hitting the mirror, prevents you from seeing your own face but instead ___________________.
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another image
![Page 43: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/43.jpg)
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• Contact lenses are a type of corrective lens for people who “need glasses”. They work to correct vision because they are very similar to the ___________ in the human eye.
![Page 44: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/44.jpg)
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• cornea
![Page 45: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/45.jpg)
question
• The reason you SEE colors of objects is that the object is reflecting the light color that you are seeing. It absorbs all the other light colors of the visible spectrum. So, when you notice that an apple is red, you know that it is _____________________________.
![Page 46: CRT Study Guide A well-known scientist who built the most powerful microscope of his time was __________________________. His invention was considered.](https://reader034.fdocuments.in/reader034/viewer/2022051416/56649e425503460f94b353db/html5/thumbnails/46.jpg)
answer
reflecting light