September 16, 2013 – Bell Workcopy each simple machine the back of your ISN VIDEO-

Click Here

8th Grade Science Vocabulary Terms (140 terms for Frayer Model)

1. absorb2. acquired traits3. adaptations4. atmosphere5. atoms6. balance of

nature7. balance scale8. benefit9. cell wall10. cells11. characteristics12. chemical change13. chemical weathering14. chlorophyll15. chromosome16. climax community17. closed circuit18. cold blooded19. cold front20. community21. competition22. compound23. conclusion24. condensation25. conductor26. consumer27. control

28. cytoplasm29. data (datum)30. decomposer31. density32. digestive system33. direct rays34. dominant traits35. echo36. echolocation37. ecosystem38. egg cell (ovary)39. electromagnet40. element41. elevation42. embryo43. erosion44. evaporation45. evidence46. evolution47. extinct48. fertilization49. flower50. food chain51. food web52. force53. fossil54. fulcrum55. galaxy56. gas57. gene

58. germinate59. gravity60. heredity61. humidity62. hypothesis63. igneous rock64. inclined plane65. incomplete circuit66. inference67. inherited traits68. investigation69. landfill70. lava71. lever72. liquids73. lunar phases74. magma75. mass76. mechanical weathering77. metamorphic rocks78. meter79. microscope80. mineral81. mixture82. molecules83. non-conductor

(insulator)84. non-native species

(exotic)85. observation

86. opaque87. organ88. ozone89. parasite90. photosynthesis91. physical change92. pioneer species93. pollen94. pollutant95. population96. precipitation97. predation98. procedure99. producer100. pulley101. purpose102. reaction force103. recessive trait104. reflect105. refract106. revolve107. rock cycle108. rotate109. runoff110. sedimentary rock111. simple machine112. single-celled organism113. solar eclipse114. solid115. sonar

116. sound waves117. speed118. sublimation119. succession120. surface mining121. symbiosis122. temperature123. thermal contraction124. thermal expansion125. thermometer126. translucent127. transparent128. unbalanced forces129. urban development130. vacuum131. vertebrate132. volume133. warm blooded134. warm front135. water cycle136. weather137. weight138. wetland139. wheel and axle140. zygote

absorbDefinition

• To collect, or take inFacts/Examples/NonExample• Dark colors absorb heat• Light is absorbed or

reflected• Leaves absorb sunlight in

order to make food (photosynthesize)

• Sound waves are absorbed or reflected (echo)

• Cells absorb nutrients from their environment

Memory Pictograph

acquired traitsDefinition

• Characteristic that an organisms develops because of its environment

Facts/Examples/NonExample• traits NOT from parent, but

from environment• Help organism survive

better• Trait develops because of

environmental conditions• Ex: culture, language, larger

muscles, acquired skill such as riding a bike

• Nonex: hair color, freckles, gender ----- inherited traits

Memory Pictograph

adaptations Definition

• Traits that help plants and animals survive better

Facts/Examples/NonExample• Body parts of behaviors that

help an organisms to survive • more adaptations better

chances for survival (Darwin)• EX: Galapagos Islands finches

with beaks adapted to what they feed on/ camouflage/ speed/ special coloration

• NONEX: traits that make survival less likely

Memory Pictograph

atmosphereDefinition

• blanket of gases that surround the Earth

Facts/Examples/NonExample• 78% nitrogen• 21% oxygen• Mixture of nitrogen, oxygen

and other gases in much smaller amounts

• Reduces in pressure as you go up in elevation

• Several layers that have different properties

• NONEX: hydrosphere, lithosphere, biosphere

Memory Pictograph

atomsDefinition

• Smallest form of matterFacts/Examples/NonExample• Atoms bond together to form

molecules• Solids, liquids, gases, and plasma –

made of atoms• Atoms contain particles:

– Protons (+)– neutrons(no charge)– electrons(-)

• Invisible and mostly empty spaceEX: Hydrogen atoms and all elements of

the Periodic TableNONEX: Molecules are MADE OF atoms

bonded together

Memory Pictograph

Carbon Atom – Atomic # 6

balance of natureDefinition

• Balance and variety of species in a community

Facts/Examples/NonExample• Helps prevent overpopulation• Birth rate and death rate are

similar• Waste of one species is food

source for another species• EX: bacteria are decomposers/

roaches are scavengers• NONEX: Lake Erie dead zones

from too much algae growth kills fish in sudden die off event

Memory Pictograph

balance scaleDefinition

• Instrument used to measure mass (amount of matter)of an object

Facts/Examples/NonExample• Measuring tool• Works like a lever • Compares unknown mass to known

mass• Measures in metric: grams (g) or kilograms (kg)• Heavy mass goes down/ light mass

goes up• EX: triple beam balance• NONEX: human weight scale –

measures mass and pull of gravity on you which depends on whether you are on Earth, moon, or another planet

Memory Pictograph

benefitDefinition

• Something that provides and advantage to an organism

Facts/Examples/NonExample• Anything that helps a

species survive• Benefits come with risksEX: pesticides can benefit

humans by reducing mosquito populations BUT organisms that feed off mosquitoes (bats, birds, fish, frogs) will be harmed

NONEX: no long term benefit to using up all the resources

Memory Pictograph

cellsDefinition

• Basic unit of all living thingsFacts/Examples/NonExample• Animal cells usually round• Plant cells usually more squared

off• Human body made up of trillions

of cells• All cells come from other living

cells• EX: prokaryote (no nucleus) and

eukaryote (has nucleus) cells• NONEX: atoms and molecules are

matter that help to make up cells but cells are alive and matter is not

Memory Pictograph

cell wallDefinition

• Outer boundary of a plant, fungi, and bacteria cells

Facts/Examples/NonExample• Hard rigid boundary that

provides support and protection

• Explains why plants do not move about well

• Can bend, but will not move• EX: made of cellulose and

makes wood hard and durable

• NONEX: animal cells do NOT have cell walls

Memory Pictograph

characteristicsDefinition

• Collection of traits that form the way an organism looks

Facts/Examples/NonExample• We inherit our traits from

our parents• So do other organisms • 50% from each parent

organism• EX: hair color, body shape,

skin color• NONEX: acquired traits such

as playing a musical instrument

Memory Pictograph