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The Eye & Light
34
opaque: A material that reflects or absorbs any light that strikes it.
translucent: Frosted glass and wax paper.
reflection: Parallel rays of light hitting a smooth surface.
Concave: mirror that curves inward.
Refraction: The human eye uses _____ to form images.
Lens: A curved piece of glass or other transparent material that is used to refract light.
Virtual: Because the light rays never meet, a concave lens can produce only a _____ image.
Green: The primary colors of light are red,blue, and _____.
Pigments: Colored substances that are used to color other materials.
Iris: Colored ring of muscle that controls the size of the pupil.
Optic Nerve: Carries the signals generated by the rods and cones to your brain (2 words).
Nearsighted: A person is _____ if their eyeballs are too long for the lens.
Telescope: Uses lenses or mirrors to collect and focus light from distant objects.
Camera: Device uses lenses to focus light rays and record an image of an object.
Transparent: Clear glass, water, and air are examples of what kind of material.
Diffuse: The type of reflections that occurs when parallel rays of light hit a rough or bumpy surface.
Cornea: The transparent front surface of the eye.
Retina: Rods and cones are the light-sensitive cells on the _____.
Upright: A plane mirror produces a virtual and _____ image.
Thinner: A concave lens is ______ in the center than at its edges.
Thicker: A convex lens is ______ in the center than at its edges.
Spectrum: Glass prisms separate white light into a visible _____ of colors.
Convex: As parallel rays of light pass through a(an) _____ lens, they are bent toward the center of the lens.
Pupil: The ____ is the part of the eye that looks black.
Microscope: Uses a combination of lenses to form enlarged images of very small objects.
Farsighted: A person is _____ if the image forms behind the retina.
Cyan: The primary colors of pigment are yellow,magenta, and _____.
Brain: The organ that interprets signals from the rod and cone cells.
Ciliary: Muscles that change the shape of the eye lens.
Sclera: Outer layer of the eye.
FocalPoint: The point where all beams of light converge (2 words).
Light: Wave that transfers energy from one place to another.
Rays: Beams of light traveling in straight lines.
Electromagneticwave: Do not need a medium to travel through (2 words).
White: ____ objects reflect all light waves.
Black: ____ objects absorb all light waves.
Plane: Flat smooth mirror.
The Eye & Light
Across:2. | A material that reflects or absorbs any light that strikes it. | 3. | Glass prisms separate white light into a visible _____ of colors. | 5. | Colored ring of muscle that controls the size of the pupil. | 6. | Device uses lenses to focus light rays and record an image of an object. | 8. | Clear glass, water, and air are examples of what kind of material. | 12. | Do not need a medium to travel through (2 words). | 14. | Parallel rays of light hitting a smooth surface. | 16. | A curved piece of glass or other transparent material that is used to refract light. | 17. | ____ objects reflect all light waves. | 19. | Wave that transfers energy from one place to another. | 24. | The primary colors of pigment are yellow,magenta, and _____. | 26. | A person is _____ if their eyeballs are too long for the lens. | 27. | Carries the signals generated by the rods and cones to your brain (2 words). | 28. | Rods and cones are the light-sensitive cells on the _____. | 29. | The organ that interprets signals from the rod and cone cells. | 30. | The ____ is the part of the eye that looks black. | 31. | Uses a combination of lenses to form enlarged images of very small objects. | 32. | Because the light rays never meet, a concave lens can produce only a _____ image. |
| | Down:1. | The transparent front surface of the eye. | 4. | A convex lens is ______ in the center than at its edges. | 6. | As parallel rays of light pass through a(an) _____ lens, they are bent toward the center of the lens. | 7. | ____ objects absorb all light waves. | 9. | The type of reflections that occurs when parallel rays of light hit a rough or bumpy surface. | 10. | Frosted glass and wax paper. | 11. | Flat smooth mirror. | 13. | The human eye uses _____ to form images. | 14. | Beams of light traveling in straight lines. | 15. | Muscles that change the shape of the eye lens. | 18. | Uses lenses or mirrors to collect and focus light from distant objects. | 20. | A concave lens is ______ in the center than at its edges. | 21. | Outer layer of the eye. | 22. | The primary colors of light are red,blue, and _____. | 23. | The point where all beams of light converge (2 words). | 25. | mirror that curves inward. |
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© 2017
PuzzleFast.com, Noncommercial Use Only
The Eye & Light
Across:2. | A material that reflects or absorbs any light that strikes it. | 3. | Glass prisms separate white light into a visible _____ of colors. | 5. | Colored ring of muscle that controls the size of the pupil. | 6. | Device uses lenses to focus light rays and record an image of an object. | 8. | Clear glass, water, and air are examples of what kind of material. | 12. | Do not need a medium to travel through (2 words). | 14. | Parallel rays of light hitting a smooth surface. | 16. | A curved piece of glass or other transparent material that is used to refract light. | 17. | ____ objects reflect all light waves. | 19. | Wave that transfers energy from one place to another. | 24. | The primary colors of pigment are yellow,magenta, and _____. | 26. | A person is _____ if their eyeballs are too long for the lens. | 27. | Carries the signals generated by the rods and cones to your brain (2 words). | 28. | Rods and cones are the light-sensitive cells on the _____. | 29. | The organ that interprets signals from the rod and cone cells. | 30. | The ____ is the part of the eye that looks black. | 31. | Uses a combination of lenses to form enlarged images of very small objects. | 32. | Because the light rays never meet, a concave lens can produce only a _____ image. |
| | Down:1. | The transparent front surface of the eye. | 4. | A convex lens is ______ in the center than at its edges. | 6. | As parallel rays of light pass through a(an) _____ lens, they are bent toward the center of the lens. | 7. | ____ objects absorb all light waves. | 9. | The type of reflections that occurs when parallel rays of light hit a rough or bumpy surface. | 10. | Frosted glass and wax paper. | 11. | Flat smooth mirror. | 13. | The human eye uses _____ to form images. | 14. | Beams of light traveling in straight lines. | 15. | Muscles that change the shape of the eye lens. | 18. | Uses lenses or mirrors to collect and focus light from distant objects. | 20. | A concave lens is ______ in the center than at its edges. | 21. | Outer layer of the eye. | 22. | The primary colors of light are red,blue, and _____. | 23. | The point where all beams of light converge (2 words). | 25. | mirror that curves inward. |
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© 2017
PuzzleFast.com, Noncommercial Use Only