1) what era are we living in a) cenozoic b) mesozoic c) paleozoic 2) old rocks can be brought to surface because of a) erosion b) tectonic plates movement c) both 3) the core is made from : a) iron  and nickel b) lava c) iron and basalt  4) alferd wegner suggested the hypothesis of : a) tectonic plate idea b) continental drift  c) meteorites 5) three evidence for continual drift are a) 1- b) 2- c) 3- 6) plates are moving because a) temperature and pressure b) the molten magma underneath them   c) volcanoes   7) this is an evidence that a) volcanoes and earthquake happen at the plate boundries b) plate boundaries have no relationship with volcanoes 8) the oldest rock has been discovered at a) USA b) canada c) Russia 9) why its difficult to find a rock with the same age of earth a) no tools to dig b) erosion process c) rocks were recycled and changed with years 10) a fragment of rock from space that falls to earth is a) solar rocks b) moon rocks c) meteorites 11) our lovely earth is about a) 4.5 billion years b) 5.4 billion c) 3.5 billion years old 12) scientist have studied meteorites and the rocks from the moon to : a) know the age of earth b) for fun :) c) know the structure of earth 13) all the fossils in the different rocks make up the a) fossil record b) fossils remains c) fossils rocks 14) this fossil is a) pterosaur b) protozoa c) seaweed 15) the oldest fossil that have been found so far are of a) fish b) simple bacteria c) protozoa 16) which fossill is the oldest  a) 1 b) 2 c) 3 d) 4 17) the remains of living organisms that have changed to rock is called a) fossil b) sedimentary rock c) humus 18) this is a clue that a) lime stone was formed under water b) lime stone was formed at the surface 19) what can this fossil tell us a) 1 b) 2 c) 3 20) which type of rock are fossils found in? a) sedimentary rock b) igneous rocks c) metamorphic rocks 21) what does deposition mean a) definition b) pass my turn 22) explain why some rock fragments are carried further than others a) explain b) pass 23) what type of weathering is this a) chemical weathering b) physical weathering c) biotic weathering 24) this is a a) physical weathering b) chemical weathering  c) biotic weathering 25) this is a a) physical weathering b) chemical weathering c) biotic weathering 26) running water is an example of a) physical weathering b) chemical weathering c) biotic weathering 27) the movement of rock fragment a) weathering b) erosion c) deposition 28) the sediments are deposited first at : a) sea bed b) second layer c) surface 29) when fragments rub against each other the edges become smoother this is called a) abrasion b) erosion c) deposition 30) sand is mixed with air and blown at buildings and pavement to clean them this is called a) sand blasting b) sand covering  c) sand cleaning

unit 10

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