Q1_Sci10_Mod5_Summative Test

A group of students notice South America and Africa fit like puzzle pieces. What idea does this support?

• Seafloor spreading
• Plate tectonics
• Continental drift
• Paleomagnetism

During a museum visit, you read that Alfred Wegener proposed a supercontinent. What was it called?

• Laurasia
• Pangaea
• Gondwana
• Rodinia

In a documentary, Harry Hess explained how the seafloor grows. What process was this?

• Continental drift
• Seafloor spreading
• Magnetic reversal
• Subduction

A GPS satellite measures the Philippine Plate movement. Which tool provides this data?

• Sonar
• GPS
• Compass
• Seismograph

A science fair exhibit shows magnetic minerals align when lava cools. This is called:

• Paleomagnetism
• Geochronology
• Plate movement
• Mineral polarity

Teacher asks: Where is the youngest oceanic crust found?

• Near trenches
• Near mid-ocean ridges
• Along coasts
• At mountain ranges

Why was Wegener’s idea initially rejected?

• Lack of fossil evidence
• No mechanism of movement
• No ocean studies
• Too many theories

Mesosaurus fossils found in Africa and South America suggest:

• Animals swam oceans
• Continents were once connected
• Oceans were freshwater
• Humans moved fossils

Ocean crust gets older farther from ridge. This supports:

• Continental drift
• Magnetic reversal
• Seafloor spreading
• Volcanic activity

Symmetrical magnetic stripes on either side of a ridge show:

• Same ocean depth
• Magnetic reversals
• Crust only on one side
• Continents never moved