Science 903 self test 3 study guide
The first to calculate the earth's circumference was __________.
Pyramid builders
Brazil
a fit with Africa
The lowest specific gravity belongs to __________.
air
oxbow
an isolated meander
The type of mountains bounded by faults is __________.
block mountains
Gases in lava produce __________.
bubbles
An object's specific gravity is numerically equal to the object's __________.
density
calculate the density of an object whose mass is 3.6 grams and whose volume is 1.2 cm cubed.
density = mass divided by volume = 3.6g/12 cm cubed = 3g/cm cubed
A vertical intrusion is a __________.
dike
fjord
drowned glaciated valley
A sandbar is the main depositional feature in a dry climate.
false
Salt that occurs in salt domes was not deposited as sea water evaporated.
false
The formula for specific gravity is mass of rock in the air divided by mass of rock in the water.
false
The layer of a soil profile that contains organic material is the regolith.
false
plate tectonics
hypothesis of crustal structure
The balance between the weight of a continent and the buoyant force of mantle is called __________.
iostasy
buoyancy
isostasy
magma
liquid rock below the surface
An ocean trench __________.
occurs where a plate is moving down.
trench
oceanic plate going down
A broad, high, flat, horizontally layered land feature is called a ___________.
plateau
weathering
processes that break up rock
breccia
rock made of angular fragments
shale
rock made of mud
igneous
rock that has cooled from the molten state
plastic
rock under high pressure
The cliff face of a fault rock is a __________.
scarp
The type of rock deposited in a geosyncline is ____________.
sedimentary
geosyncline
sedimentary basin
Gondwanaland was located in the __________ hemisphere.
southern
Calculate the specific gravity of an object whose mass in air is 160 g and whose mass in water is 100 g.
specific gravity = mass in air divided by mass in air minus mass in water. 160g/160g - 100g= 160g/60g = 2.67
When an oceanic plate collides with a continental plate, the result is__________.
the oceanic plate is forced beneath the continental plate.
Gondwanaland
the single southern continent
Folded mountains result from the collision of continental plates.
true
TRUE/ FALSE The idea of floating continents is hundreds of years old.
true
The Antarctic ice sheet holds the underlying rock below sea level.
true
The change from feldspar to clay minerals is an example of chemical weathering.
true
The specific gravity of mantle rock is about 3.3.
true
Till is unsorted glacial debris
true
Melted paste material reappears by way of __________.
volcanoes
Specific gravity is the density of an object compared to the density of __________.
water
lava
when liquid rock reaches the surface
