Chapter 12 vocabulary booklet NAME: ________________________________ Date: ______________________ Period: _____________ Due date: _______________ Score: ______________/100 Directions: 1. Fill in the definition for each word. 2. Choose do to TWO of the following: Picture, Sentence, or My Meaning. 3. The third option is extra credit. Relative Dating Definition Sentence Picture My meaning Radiometric Dating Definition Sentence Picture My meaning 2 Isotope Definition Sentence Picture My meaning Half-life Definition Sentence Picture My meaning 3 Index Fossil Definition Sentence Picture My meaning Geologic Time Scale Definition Sentence Picture My meaning 4 Era Definition Sentence Picture My meaning Period Definition Sentence Picture My meaning 5 Epoch Definition Sentence Picture My meaning Nebula Definition Sentence Picture My meaning 6 Ribozyme Definition Sentence Picture My meaning Cyanobacteria Definition Sentence Picture My meaning 7 Endosymbiosis Definition Sentence Picture My meaning Paleozoic Definition Sentence Picture My meaning 8 Cambrian Explosion Definition Sentence Picture My meaning Mesozoic Definition Sentence Picture My meaning 9 Cenozoic Definition Sentence Picture My meaning Primate Definition Sentence Picture My meaning 10 Prosimian Definition Sentence Picture My meaning Anthropoid Definition Sentence Picture My meaning 11 Hominid Definition Sentence Picture My meaning Bipedal Definition Sentence Picture My meaning 12 Crossword Puzzle 13 Word Search Search for all 22 words: D I O P O R H T N A C P C Q U O R Q Q F I W A Q N R O Y F O K V D U B I R D S L A Z G M M L H K A C I C S N H T Y S P V O O R X D S M J R D L Y I B H L E A C C M N A R G Z S N I H W S T W I X R I S Z U I O M J G L U U C O I O B H V I Q G A E O G H P H P S C B E N C X Z N M D Q D B S Y V T R J T O N E A W S O R I F Z Y E I I N Y M O M C Y U P T M J E B L Z O O I H N T C A K B K G I A T I K S Z K D G P O F Z F O A R K F N M H N E B J X E F F N M H J I O O L M X I N I S K T I Z O M B V I Q P B D X C Y S T I I C E C E U P E Q N L Y A E T U R I J V W E V N O D F J D J X L A A Z O S F Q W D M P G C M T I P A S A E K N E P Y O U G O E T X E Y E A O P D S T E M I B H S I C L H D I D Q C D Q I D R C Q A I A D R V J O J X M M O D C N M G G J R A J M X N E V L V I B L S Y Z P D S T E S R S X H L I Q G I E O L R Q O G M F E J C R I B O Z Y M E E P P R E L A T I V E D A T I N G Q M O M R N S U X Y A N E B U L A C F I U R H S W O E F N E G N M L W Y K U Z S M R U P W J D S U U W S E W S M M J R B Y P L J H P N K J J N G G R R I C T S T A U U K W Z W L K V Y F S I J F P S G R L A V N M R O Q K T M T U J E N I Q B T Q B W V R N L S Z U E S C S C Y N M B C V P C I T Z S Q M T G E D V W X W K X Z U R E M V B K X O P Q L W E T A M I R P P R N X P W 14 Who Am I? Choose among these terms to answer the riddles below: Relative dating Index fossil Epoch Primate Radiometric dating Era Nebula Prosimian Half-life Period Ribozyme Anthropoid Hominid 1. I am the amount of time it takes for half of an isotope in a sample to decay into a different element: _________________________ 2. I am made up of epochs and am the most commonly used unit of time on the geologic time scale: _______________________ 3. I am an RNA molecule that can catalyze specific chemical reactions: _________________________ 4. I am a fossil that is used to determine the age of other fossils or rock layers: ___________________________ 5. I can be used to estimate when something lived based on comparing where it is found in a rock layer in relation to other rock layers: ____________________________ 6. I am the smallest unit of geologic time and I last several million years: ____________________________ 7. I am a member of a group of mammals that have flexible hands and feet and forward-looking eyes: ________________________ 8. I am a member of the oldest living primate group and am small with big eyes: _______________________________ 9. I can estimate the actual age of a fossil or rock layer by using the decay rate of unstable isotopes in the sample that is tested: _______________________________ 10. I am made up of geologic periods and last tens to hundreds of millions of years: _______________________________ 11. I am a member of a group of primates that includes monkeys and apes, and my name means “humanlike”: ______________________ 12. I am a member of a group of primates whose only living species is modern humans, Homo sapiens: ________________________ 13. I am a condensing cloud of gas and dust in space: _______________ 15 16