1) This is a trilobite fossil! Finding the age of a fossil by comparing it to other fossils or events? a) absolute dating b) relative dating c) precambrian d) geological time scale 2) Determining the age of a fossil by counting the amount of unstable atoms that are present in the sample? a) relative dating b) trait c) absolute dating d) selective breeding 3) Which choice below from the electromagnetic spectrum has the highest frequency? a) visible light b) X rays c) radio waves d) microwaves 4) The height of a sound wave is represented by the? a) amplitude b) crest c) trough d) wavelength 5) Polar bears have thick white fur to keep them warm and to blend in with the snow and ice. Thick white fur is a/an a) mutation b) allele c) vestigial structure d) adaptation 6) What animal feature did Charles Darwin focus on while working in the Galapagos Islands? a) fee shape b) beak shape c) eye color d) wing span 7) Some animals like cockroaches can reproduce very soon after being born. This is known as? a) selective breeding b) a trait c) generation time d) vestigial structure 8) The age of reptiles? a) Paleozoic Era b) Mesozoic Era c) Precambrian Era d) Cenozoic Era 9) The land that drains into an estuary is called a/an? a) river b) watershed c) tributary d) marshland 10) How many watersheds does the state of Virginia have? a) 1 b) 2 c) 3 d) 4 11) The Chesapeake Bay is an example of ____ water. a) fresh b) salt c) brackish 12) The age of mammals, and the era we are living in right now! a) Precambrian b) Paleozoic c) Mesozoic d) Cenozoic 13) Which choice below is an example of a vestigial structure that humans have? a) brown hair color b) Rr c) blue eyes d) a tail bone 14) Which of these choices below would have the highest PH reading? a) orange juice b) lemon juice c) bleach d) saliva 15) Which of these choices below would have the lowest PH reading? a) soap b) orange juice c) battery acid d) water 16) A historical sequence of life indicated by fossils found on Earth makes up the? a) fossil record b) geological time scale c) PH scale d) atomic model 17) Alligators often lay two hundred eggs! But only a few will live to be adults. This is called? a) overproduction b) evolution c) speciation d) geographical isolation 18) Two populations like tigers and lions have become so different, they are now different species! a) selective breeding b) adaptation c) speciation d) Precambrian 19) Which choice below is a dwarf planet because it cannot CLEAR ITS NEIGBORHOOD? a) Mercury b) Jupiter c) Pluto d) Saturn 20) The first group/family on the periodic table is called the? a) alkali metals b) alkali Earth metals c) noble gasses d) transition metals

Natural selection!

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