Earth Science Post Test Study Guide
What is your favorite class?
Science
What can you deduce when the same plants and animals are found on continents that are separated by the Atlantic Ocean.
The continents now separated by the Atlantic Ocean were once a single landmass.
If you found a fish fossil on a mountaintop you could deduce what?
The rocks on the mountaintop werer once at the bottom of an ocean
How do worms help the soil?
They move and mix the soil
What landform is present before a sinkhole occurs?
a cave
What instrument is used to detect the Earth's magnetic field?
a compass
How are the plates moving in a transform boundary?
against each other in opposite directions
How are the plates moving at a divergent boundary?
away from each other
Earth can be divided into three layers: the core, the mantle, and the crust. How are these three layers identified?
by there chemical compostion
An experiment is conducted where an icecube that has been made of darkly colored food coloring is lowered into a beaker of warm water. What happens to the icecube is an example of what?
convention currents in the mantle
New ocean floor is most likely to form as movement occurs at which type of plate boundary?
divergent boundary
What could a transform boundary cause?
earthquake
Place the following time units in order from largest to smallest. era, period, epoch, eon
eon, era, period and epoch
What major event marks the tranisition between Mesozoic and Cenozoic eras?
extinction of the dinosaurs
What process of erosion would cause pebbles in a stream to erode?
flowing water
How can sedimentary rock become metamorphic rock?
heat and pressure
What is the core made up of?
iron and nickel
How can igneous rock be changed into sedimentary rock?
it must be broken down into sediment
Caves, sinkholes, and underground streams are examples of what?
karst topography
What layer of the Earth would the tectonic plates be found?
lithosphere
What property is used to make these layers of the earth: lithosphere, asthenosphere, mesosphere, outer core, inner core
physical properties
What landform is formed at a divergent boundary?
ridges
Describe the mantle
the hot layer of rock between the crust and the core
Describe the core of the Earth
the inner most part of the Earth below the mantle
Describe the crust of the Earth
the thin and solid outermost layer of the Earth
Why is there a higher risk of earthquakes along the California coast than along the Florida coast?
there is a plate boundary near the California coast but not one near the Florida coast
Volcanoes and mountains often form at convergent boundaries. Which way are the plates moving to create these
toward one another
What is soil made of?
weathered sediment, organic material, water, and air
How do igneous rocks form
when magma cools and hardens
According to rock record, Earth's geologic history covers what amount of time?
4.6 billion years