D. Volcanic Rock
As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.
Answer: 1. (A bat food supply decreased.)
Explanation:
Answer:
The correct option is A. Cooler, more dense material sink while warmer, less dense material rises.
Explanation:
Convection can simply be described as the transfer of heat energy among molecules or substances. Convection will occur if molecules of liquid or gas are given rough supply of heat. Hot liquids or gases would have the following properties:
- Their density would be less.
- They would have the ability to rise.
Whereas the cooler molecules will have the following properties:
- Their density would be more than the hot molecules.
- They would have the ability to sink.
Answer: An Electrical fuse
Explanation: An electrical fuse is a small, thin metallic conductor designed to melt and/or separate into two pieces for the purpose of breaking a circuit. electrical fuse interrupts circuit current in the event of electrical hazard. A circuit breaker is designed to automatically disconnect to an overcurrent condition.
