Final Review: History Of Earth Question Preview (ID: 12580)


This Will Cover The Ideas About Earth\'s Formation And How We Know About It. TEACHERS: click here for quick copy question ID numbers.

How do scientists believe the earth was formed?
a) Scientists believe the earth grew from the sun.
b) Scientists believe the earth was formed before the Big Bang.
c) Scientists believe the earth was formed after the Big Bang, when debris was flying everywhere.
d) Scientists believe the earth fell down from the sky.

What does it mean that the earth “differentiated”?
a) Differentiated means that the earth was cut apart.
b) Differentiated means that Earth had different kinds of plants living on it.
c) Differentiated means that Earth had different kinds of animals living on it.
d) Differentiated means that the earth formed its layers (of different densities).

How do scientists believe the earth obtained its first oceans (water)?
a) Scientists believe the earth got its first water from the sun.
b) Scientists believe the earth got its first water from icy comets pelting the earth.
c) Scientists believe the earth got its first water from the moon.
d) Scientists don't believe the earth ever got water.

What do scientists believe led to the formation of the first continents (land)?
a) Scientists believe the first land came from icebergs.
b) Scientists believe the first land came from the moon.
c) Scientists believe the first land came from the sun.
d) Scientists believe the first land was created when volcanoes erupted under the ocean and built up.

What do scientists believe produced the first BREATHABLE amounts of oxygen?
a) Scientists believe the first oxygen came from the sun.
b) Scientists believe the first oxygen was always there.
c) Scientists believe the first oxygen came from water.
d) Scientists believe the first oxygen came from bacteria that lived all over the oceans.

How old do scientists believe the earth is?
a) 4.54 years
b) 4.54 trillion years
c) 4.54 billion years
d) 4.54 million years

To determine the age of the earth, scientists dated rocks from where?
a) Only from the earth
b) Only from meteorites
c) Only from the moon
d) From the earth, meteorites, and the moon

When scientists look at many layers of rock on top of each other, how do they figure out which are the oldest and youngest layers?
a) Oldest rock are on bottom, youngest rocks are on top.
b) Oldest rocks are on bottom, youngest rocks are on top AND layers that cut through others are older.
c) Oldest rocks are on bottom, youngest rocks are on top AND layers that cut through others are younger
d) Oldest rock are on top, youngest rocks are on bottom.

What kinds of things do scientists date using Radiometric dating with Carbon-14? Why?
a) Rocks, because rocks are really old.
b) Rocks and Fossils because Carbon is in everything
c) Only fossils because rocks were never living, so they don't lose Carbon 14 over time.
d) Only rocks because rocks were never living, so they don't lose Carbon 14 over time.

What kinds of things do scientists date using Radiometric dating with Uranium-238? Why?
a) Fossils, because fossils are really old.
b) Rocks and Fossils because Uranium is in everything
c) Only fossils because fossils have too much Carbon
d) Only Rocks because Uranium takes a long time to decay, so it can date really old rocks.

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