GPS Technology Evidence
GPS Technology Evidence is a Grade 7 science concept from Amplify Science (California) Chapter 3: Investigating the Rate of Plate Movement, explaining how GPS receivers provide direct evidence of tectonic plate motion. By measuring precise plate positions over years, GPS generates hard data confirming that plates are moving and calculating their exact speed and direction.
Key Concepts
Since humans cannot feel this slow motion, scientists rely on technology. The Global Positioning System (GPS) allows for precise measurements of Earth's surface.
By placing GPS receivers on different plates and tracking their positions over years, scientists obtain hard data. This GPS evidence proves that the plates are indeed moving and allows us to calculate exactly how fast and in what direction they are traveling.
Common Questions
How does GPS provide evidence for tectonic plate motion?
GPS receivers placed on different tectonic plates measure their precise positions repeatedly over years. The gradual change in position between measurements provides direct evidence that plates are moving and allows scientists to calculate their exact speed and direction.
What data does GPS collect about plate motion?
GPS collects millimeter-precision positional data over time. Comparing positions measured years apart reveals how far a plate has moved, how fast it is moving, and in what direction — providing hard quantitative evidence of plate motion.
Why is GPS evidence more convincing than historical geological evidence alone?
GPS provides real-time, directly measured data rather than inferences from ancient rock formations. It confirms that plates are moving right now, at measurable rates, removing any doubt about whether plate motion is ongoing.
What do Grade 7 students learn about GPS technology in Amplify Science?
In Chapter 3 of Amplify Science California Grade 7, students learn that GPS technology provides direct quantitative evidence of plate motion, calculating exact speeds and directions that confirm tectonic plates are in continuous motion.