Yellowstone

A   Not for 2 million years

B  The magma is cooling so fast it no longer can erupt

C   Not for 10 million years

D  It could be tomorrow or 10 to 100 thousand years from now. We cannot really tell

E  Not for 200,000 years

F    

A  Isostatic rebound

B  The magma chamber is rising and pushing the ground up

C  No one knows right now

D  Sediment is piling up quickly causing the lake floor to sink

E  So much human trash is causing the lake level to change

A  Subsidence, the lake floor is sinking

B  Carbon dioxide is released into the lake preventing any fish from living in it

C  Uplift, you can now see a sunken boat on the surface

D  Isostatic rebounding is allowing the lake to rise as the glaciers melt

A  Toxic gas killed off 60% of the park’s wildlife

B  Yellowstone erupted

C  More than 500 earthquakes in 10 days

D  Yellowstone rose over 3 feet in elevation

A  It shows that the pressure has increased making an eruption likely in the next ten years

B  It shows that the volcanic hot spot is shifting to the left

C  It shows that pressure has been relieved in the volcano making an eruption unlikely to happen in the future

D  It shows that the North American plate is moving

A  150,000 years

B  1000 years

C  800,000 years

D  A few million years

E  50,000 years

A  Yellowstone crater formed from a meteor impact that killed off the Ice Age mammals

B  By subsidence caused by the piling up of heavy rock

C  The crater of Yellowstone formed because there was a giant reservoir of molten rock, which when lava erupted, the ground around collapsed and fell through

D  By basalt flows down cutting the slopes of the volcano

A  250 times

B  10 times

C  2500 times

D  5 times

E  100 times

A  Basalts that flowed down to California from the Yellowstone volcano

B  Ejected bones of bison from an earlier Yellowstone super eruption

C  Volcanic ash from last Yellowstone super eruption, 640,000 years ago

D  Large boulders blasted away from Yellowstone

A  Basalt

B  Rhyolite

C  Limestone

D  Granite

E  Sandstone

A  Hot molten lava flow originating from deep below the earth crust, slow cooled and making its way towards the surface.

B  Erosion of old granite rock units

C  Metamorphism of old beach deposits due to the high temperature of the hot springs

D  Glacial deposits from the north

A  Rainwater continually fills the basin, hot rock heat the water, water pressure drops, and then thousands of gallons of water turn to steam and blast into the air.

B  River water slowly fills the reservoir under the crust and heats up with hot rock underneath.

C  Glacial melt water continually fills the basin, hot rock heat the water, water pressure drops, and then thousands of gallons of water turn to steam and blast into the air.

D  It is actually not faithful but erupts irregularly.

A  It is home to the largest diversity of wildflowers

B  Its large animals can only live at its 8,000 foot elevation

C  It sinks a more than a foot per year causing groundwater to shoot to the surface

D  Its strange geology