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A hard plate is a type of armor used in bulletproof vests and body armor to protect against bullets and other forms of ballistic threats. It is usually made from materials like steel or ceramic to provide a rigid barrier against projectiles. Hard plates are essential for providing additional protection to the wearer in high-risk situations.
Very hard minerals like diamonds can leave no streak because their hardness prevents them from being scratched by the streak plate. Since the streak test involves rubbing the mineral against a surface to leave a streak, extremely hard minerals won't leave a streak behind because they are tougher than the testing material.
The streak of Jade is white.
The names of the 13 major tectonic plates are North American Plate, South American Plate, Pacific Plate, African Plate, Eurasian Plate, Indo-Australian Plate, Antarctic Plate, Caribbean Plate, Arabian Plate, Cocos Plate, Juan de Fuca Plate, Nazca Plate, and Philippine Sea Plate.
Pacific Plate North American Plate Eurasian Plate African Plate Antarctic Plate Indo-Australian Plate South American Plate Caribbean Plate Arabian Plate Philippine Sea Plate
1. Pacific Plate and North American Plate 2. China Plate and Pacific Plate 3. Australian Plate and Pacific Plate 4. South American Plate and Nazca Plate 5. Eurasian Plate and African Plate 6. Eurasian Plate and Arabian Plate 7. Eurasian Plate and Australian PLATE 8. Scotia Plate and Antarctic Plate