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DEN - Greatest Discoveries with Bill Nye: Earth Sciences Flashcards | StudBud
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DEN - Greatest Discoveries with Bill Nye: Earth Sciences
DEN - Greatest Discoveries with Bill Nye: Earth Sciences
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Questions corresponding to Greatest Discoveries with Bill Nye - Earth Sciences on Discovery
Flashcards
15 cards
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Questions
15
Answers
1
How do we know how old the earth is?
Volcanic Ash Dating
Radiometric Dating
Atomic Dating
Fossil Dating
2
Who was Alfred Wegner?
Swiss scientist who went diving
Canadian scientist who thought continents moved
Austrian scientist who explored volcanos
German scientist who developed theory of Continental Drift
3
How many times greater is the pressure at the centre of the earth compared to the surface?
300 000
30 000 000
3000
3 000 000
4
Magnetic Field Reversal is...
When earth's magnetic north and south reverse
When continents move closer together because of magnets
When Santa lives at the south pole
When the rocks and minerals change their composition
5
The name Pangea comes from...
Ancient Greek pan - whole and Gaia - Mother Earth, land
Ancient African meaning together and old
Ancient Spanish pan - dish and gea - stuck
Ancient Canadian pan - land and gea - really old
6
Who was Harry Hess?
visited the equator to study the crust
Had theory that earth is round
Helped develop theory on sea floor spreading
Developed theory of volcano explosions
7
Continental Drift theory stated that...
Earth plates that are created from volcanos
Earth's are made of giant plates that move
Sheet that are made of ice that float on water
Plates of left overs from Alfred's fridge
8
What is the difference between Earth’s outer and inner cores?
inner core is jelly, outer core is slimy
inner core is liquid, outer core is solid
inner core is plastic, outer core is metal
inner core is solid, outer core is liquid
9
What is Global Warming?
Increase in the amount of cars
Earth heating up because the sun is closer
Oceans getting warmer because of more boats
Increase in the average temp. of the atmosphere and oceans
10
What is Sea Floor Spreading?
At mid-ocean ridges, new crust is formed by volcanos
Ocean floor is spreading because of the weight of the water
continent move farther apart, all oceans are getting bigger
Ocean is getting bigger because glaciers are melting
11
What is Pangea?
Name of Alfred Wegner's dog
Old name of North America
Super Continent that existed when continents were together
Place where first volcano was discovered
12
What is Radiometric Dating?
technique to date materials and the decay rates of isotopes
Comparing ancient rocks to current rocks
How particles and molecules of water break down
Comparing the atoms of materials and how they react
13
A subduction zone is where...
a heavier plate is pushed under another plate
where volcanos may occur
where earthquakes may occur
ocean plates meet
14
What are the 4 main layers of the Earth?
inside, outside, middle, top
inner core, outer core, mantle, crust
inner core, outer core, middle, skin
one, two, three, four
15
How old is our planet?
between 4.5 and 6 billion years old
between 2.5 and 4 million years old
between 1.5 and 2 billion years old
between 4.5 and 6 million years old
