Podcast
Questions and Answers
What technology in the 1950s allowed scientists to capture an image of the bottom of the ocean?
What technology in the 1950s allowed scientists to capture an image of the bottom of the ocean?
- Radar
- Underwater cameras
- Sonar (correct)
- Satellite imagery
What did scientists discover about the bottom of the ocean that astonished them?
What did scientists discover about the bottom of the ocean that astonished them?
- Flat and smooth surface
- Extensive coral reefs
- Abundance of shipwrecks
- Mountains, valleys, ridges, trenches, and volcanoes (correct)
What do the tectonic plates, according to the text, float on top of?
What do the tectonic plates, according to the text, float on top of?
- Metallic core
- Solid bedrock
- Circulating magma mantle (correct)
- Ocean water
What is the main idea behind the theory of plate tectonics?
What is the main idea behind the theory of plate tectonics?
What does the plate tectonics theory provide a reason for?
What does the plate tectonics theory provide a reason for?