ch.1
hypothesis
A tentative, testable statement about the general nature of a phenomenon is called a/an:
true
Layers of Earth separated on the basis of density differences
nebular hypothesis
all bodies in the solar system formed from an enormous gas cloud.
lithosphere
crust and the uppermost mantle consisting of a solid rock layer
crust, lithosphere, asthenosphere, mantle, outer core, inner core.
earths interior from top to bottom:
4.6 billion years
how old is the earth?
pacific, atlantic, indian, arctic
oceans from biggest to smallest
asthenosphere
plastic (capable of flow) portion of the upper mantle beneath the lithosphere
water vapor released from volcanic outgassing
Current scientific knowledge indicates that the most likely origin of most of Earth's oceans was due to
lower
During the height of the last Ice Age (~21,000 years ago), large glaciers made the continents ride
true
Earth developed the first ocean by about 4 billion years ago.
true
The Earth's crust solidified around 4.5 billion years ago.
pacific ocean
The largest geographic feature on the surface of Planet Earth is
crust and upper mantle
The lithosphere consists of Earth's