Chapter 3 Review

How do geologists use GPS to study plate motion?

• Geologists use GPS on their cell phones to track plate motion
• Geologists use permanent GPS units installed in solid rock to track plate motion
• Geologists put GPS units on trucks parked in different places to track plate motion
• Geologists don't use GPS to track plate motion

What do the arrows and numbers mean in this map?

• The arrows and numbers mean the plates move randomly
• The arrows and numbers mean the plates don't move much
• The arrows and numbers mean the direction the plates are moving and how fast
• The arrows and numbers mean the plates are stuck for a certain number of years

How is plate motion observed?

• Plates move fast enough to tell by comparing pictures of a place from year to year
• Plates don't move, so geologists can't see anything
• Geologists are so good at seeing plate motion that they can watch them move
• Plates move so slowly that geologists can only measure their speed with GPS

Who was Alfred Wegener?

• Alfred Wegener was the geologist who first figured out that plates are moving on Earth
• Alfred Wegener was a famous scientist who figured out that plates don't move
• Alfred Wegener was a famous geologist who figured out that plates are made of rock
• Alfred Wegener was a famous geologist who figured out that plates are only on land

If we went back 200 million years, where would the continents be in this picture?

• The continents would be in the same place
• The continents would all be together in one giant continent
• The continents would be close together but not touching
• The continents would be farther apart than they are in the picture

If we went back 200 million years, would there be more ocean floor (gray area) or less?

• There would be more ocean floor because the continents would be farther apart
• There would be the same amount of ocean floor
• There would be a little less ocean floor because the continents would be closer
• There would be almost no ocean floor because the continents would all be together

How does the fossil evidence help understand what happened to Gondwanaland? 

• Fossil locations tell us where the animals lived on different continents
• Fossil locations are evidence that the animals once lived together so the continents were together
• Fossil locations tell us the animals live on different continents today
• Fossil locations are evidence that the continents never moved

How fast do plates move?

• Plates move about 3-7 cm per year (about 2-5 inches)
• Plates move about 100 meters (over 100 yards) every year
• Plates don't move, that's crazy
• Plates move about 1-2 kilometers every year (about a mile)

Which of these statements is true?

• Evidence for Africa and South America moving apart includes earthquakes in Africa and South America
• Evidence for Africa and South America moving apart includes volcanoes in Africa and South America
• Evidence for Africa and South America moving apart includes earthquakes and volcanoes at the mid-ocean ridge
• Evidence for Africa and South America moving apart includes earthquakes and volcanoes at the convergent boundary

Which of these statements is NOT true?

• Earthquakes occur in a pattern along the plate boundary between the Africa and South America plates
• A mid-ocean ridge is found along the plate boundary between the Africa and South America plates
• Volcanic activity happens in a pattern along the plate boundary between the Africa and South America plates
• A convergent plate boundary is found between the Africa and South America plates