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How people lit fire with stone in ancient times?
They rubbed stones really hard causing it to generate a spark. With continuous generating of a spark, they lit a piece of wood. Wood can catch fire really easily.
What are the causes of the metamorphic rocks?
Heat and pressure.
What causes change in color in a sedimentary rock?
weathering erosion transportation deposition compaction/cementation and lithification changes sediments to sedimentary rocks. High pressure and temperatures changes them to metamophic rocks
What forces affect rocks above the earth's surface?
The main force that affects the rocks on the earth's surface is heat and erosion. Erosion causes rocks to have landslides and heat changes their structure causing them to take place as different structures.
How is each of three classes of rocks formed?
Igneous rocks are volcanic rocks. They are formed when lava/magma dries. Examples of igneous rocks are pumice, obsidian, and granite. Sedimentary rocks are rocks formed when layers of sediment are compacted under immense pressure to form a rock. An example is sandstone. Metamorphic rocks are any rock (igneous, sedimentary, or even metamorphic), is subjected to immense heat and pressure. This causes the rock itself to change to a new rock. Examples are marble and shale.
What type of white rocks spark when rubbed together?
Quartz is a common type of white rock that can spark when rubbed together due to its hardness and crystal structure. It is composed of silicon dioxide and can generate static electricity when two pieces are rubbed together, creating sparks.
What object can best be used as friction?
your hands or two rocks rubbed together
Changing one letter at a time get from spark to rocks in five steps?
Spark spars soars soaks socks rocks
Will pop rocks pop if they are rubbed on carpet?
no they only pop once they are exposed to water
What tools did Neanderthals use to make fires?
sticks and rocks they probably rubbed them together
How does two rocks rubbing together make sparks?
Rubbing of every two rocks doesn't create fire... those are special type of rocks...perhaps having some amount of phosphorus in them... when they are rubbed...friction causes heating which causes them to initiate sparks
What force causes two objects to warm up when rubbed together?
Friction
What causes no spark to spark plug?
It may be that the spark plug is dirty. Try cleaning it
Is gravity the force that causes rocks to change shape and size?
No, its erosion that causes rocks to change
What causes rocks to be smooth and rounded?
Rocks become smooth and rounded through a process called abrasion. This occurs when the rocks are continuously rubbed against each other or against other surfaces, wearing down their rough edges and surfaces over time. Factors such as water flow, wind, ice, and sand can contribute to this process.
What happened when Thales rubbed the amber and the silk cloth?
Thales of Miletus, a Greek philosopher, discovered that rubbing amber with silk created an electric charge in the amber which caused objects to be attracted to it. If rubbed enough, it created a spark, much like we receive when we walk on carpet and touch a doorknob and see, hear and feel the spark.
What do you cal when you rubbing to materials together causes?
When two materials are rubbed together, it can cause a transfer of electrons between them, resulting in a build-up of static electricity. This can lead to various effects such as a spark discharge, attraction or repulsion of objects, or even a mild electric shock.
