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Seafloor Spreading Flashcards | StudBud
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Seafloor Spreading
Seafloor Spreading
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Chapter 17.2 Glencoe Science: Earth Science
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
Which of these is a layer of the geosphere?
Mantle
Troposphere
Central Core
Thermosphere
2
How long has it been since the last magnetic reversal?
0.7 Million Years
3.3 Million Years
2.5 Million Years
780,000 Years
3
An isochron map is a map of the ages of different rocks.
Yes
No
4
When did most people stop believing that the ocean floor was mostly flat?
1880's
1920's
1940's
1960's
5
Which is one of the five main areas of Earth Science?
Psychology
Astrology
Geology
Oceanography
6
What does a magnetometer do?
Reverse small magnetic fields.
Disrupt a magnetic current.
Detect a magnetic field.
Create a magnetic current.
7
What is the study of the history of Earth's magnetic field called?
Paleomagnetism
Geomagnetism
Electromineralism
Magnetolitism
8
Who proposed the idea of moving continents?
Charles Darwin
Alfred Wegener
Albert Heim
Abraham Ortelius
9
What the Wegener call his supercontinent?
Gondwana
Laurasia
Rodinia
Pangea
10
About how old are the oldest ocean rocks?
180 Million Years
65 Million Years
3.8 Billion Years
750 Million Years
11
What type of scientist looks at the ocean floor to learn about plate tectonics?
Marine Geologist
Aquatic Mineralist
Marine Ecologist
Terran Geologist
12
What does SI stand for?
El Sistema Internacional de Unidades
Systemet Internasjonale Enheter
das System der Internationalen Einheiten
Le Systeme International d'Unites
13
What underwater landforms did scientists first discover from ocean floor maps?
Coral Reef
Deep-Sea Trench
Ocean Ridge
Abyssal Plain
14
What rock makes up most of the ocean crust?
Sandstone
Granite
Quartz
Basalt
15
What is the deepest point on Earth?
Gulf of Persia
The Black Sea
Death Valley
Marianas Trech
