MOSTost Comet Nuclei Are Believed to Be

question 189

Multiple Choice

MOSTost comet nuclei are believed to be:

• A) carbonaceous chondrite meteorites-carbon material-ignited by sunlight and resulting in long smoke trails.
• B) pieces of dusty ice left over from the formation of the solar system.
• C) pieces of dirty ice ejected from the surface of the icy satellites of the outer planets by asteroid impacts.
• D) pieces of rock or iron chipped from asteroids by impacts.

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Definitions:

Drum Brakes

A type of braking system using brake shoes pressed outward against a rotating drum to slow or stop a vehicle.

Disc Brakes

A type of brake that slows or stops a vehicle by squeezing brake pads against a disc or rotor attached to the wheel.

Brake Fade

A reduction in the braking power of a vehicle, often due to overheating of the brake components during heavy use.

Water Fade

A decrease in the performance of brake components due to the presence of water.