Science Crossword
Across
- 4. Blood vessels that carry blood back to the heart
- 5. Canal The area that sound waves pass through to reach the eardrum
- 8. Multicellular eukaryote that produces its own food through photosynthesis
- 11. An organism that is internally warmed by a heat-generating metabolic process
- 12. A flower structure that encloses and protects ovules and seeds as they develop.
- 13. Cells The two new cells that result from mitosis and cytokinesis
- 16. Tissue composed of fibers that can contract causing movement of an organ or part of the body
- 17. Any organic compound whose molecule contains one or more hydroxyl groups attached to a carbon atom.
- 18. Produces pollen
- 19. selection Organisms most adapted to environment are more likely to survive.
- 22. the act of concealing the identity of something by modifying its appearance
- 23. A connective tissue that is more flexible than bone and that protects the ends of bones and keeps them from rubbing together.
- 27. event A disastrous event
- 28. Female part of the flower
- 30. Isolation Isolation between populations due to physical barriers
- 36. The height of a wave's crest
- 37. Basic unit of life
- 38. A scientist who studies fossils
- 40. Mineralized connective tissue.
- 42. The stalk of a flower's carpel with the ovary at the base and the stigma at the top.
- 48. The clear tissue that covers the front of the eye
- 49. Decay The breakdown of a radioactive element releasing particles and energy
- 51. An animal without a backbone
- 54. Division of the cytoplasm during cell division
- 55. A force that pushes on or squeezes a material.
- 58. Control Center of the cell
- 60. flowering plants
- 62. a coiled bony fluid-filled tube in the inner ear; sound waves traveling through the cochlear fluid Trigger Nerve impulses
- 63. A hypothesis that has been tested with a significant amount of data
- 65. A ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening
- 68. A sound's intensity
- 70. the tightening of a muscle
- 72. Blood vessels that carry blood away from the heart
- 74. variety
- 75. Bacterial infection of the lungs
- 76. Age The age of a rock compared to the ages of rock layers
Down
- 1. Takes in and retains energy
- 2. A collection of tissues that carry out a specialized function of the body parent cell original cell before cell division
- 3. A diagram that shows the occurrence of a genetic trait in several generations of a family.
- 6. Upper chamber of the heart
- 7. A place where two or more bones meet
- 9. Muscles attach to bones to help provide movement
- 10. Damage to the brain from interruption of its blood supply.
- 11. The shaking that results from the movement of rock beneath Earth's surface.
- 14. (Bends) light rays so the rays focus on the retina
- 15. An organism's physical appearance or visible traits.
- 20. an organism that contains two different alleles for a trait (Aa)
- 21. Record The millions of fossils that scientists have collected
- 24. The opening through which light enters the eye
- 25. A living thing that is not a human being or plant
- 26. Darwin English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
- 29. Male part of the flower
- 31. Microscopic blood vessels that connect arteries and veins
- 32. Cell division that produces reproductive cells in sexually reproducing organisms
- 33. pivot point of a lever
- 34. Lower chambers of the heart
- 35. High blood pressure
- 39. The principle that in undisturbed rock layers the oldest rocks are on the bottom
- 41. genetic makeup of an organism
- 43. Attaches muscle to bone
- 44. A plant that produces seeds that are exposed rather than seeds enclosed in fruits
- 45. Powerhouse of the cell
- 46. Straightening a body part
- 47. Ability of an animal to look like another more harmful animal
- 50. Atoms of the same element that have different numbers of neutrons
- 52. Light sensitive layer of the eye; contains rods and cones
- 53. THE STUDY OF EMBRYOS
- 56. dominance Situation in which one allele is not completely dominant over another allele
- 57. Compound
- 59. A term that typically describes a species that no longer has any known living individuals.
- 61. A person who studies plants and animals by observing them
- 64. Material through which a wave travels
- 66. layer
- 67. Passes on from one place to another
- 69. sticky portion at the top of the style where pollen grains frequently land
- 71. unicellular fungi
- 73. How high or low a sound is
- 77. A reflected sound wave