What happened when two of the stones are rubbed together?

The sparks are produced due to the friction between the two stones. Friction between two objects produces heat energy.

Why is spark produced when two stones are?

Q a spark is produced when two stones are struck against each other. Give reason. Answer the spark is produced because this collision is an inelastic collision and its mechanical energy is lost in form of light energy which appears as the spark.

When we rub two flint stones together got them to heat up and to ignite a heap of dry leaves in the form of chemical energy sound energy heat energy electrical energy?

One of the greatest technical achievements of humankind occurred when we discovered how to ignite and control fire. We learnt to rub two flint stones together (mechanical energy), got them to heat up and to ignite a heap of dry leaves (chemical energy), which then provided sustained warmth.

How would the physical state of energy be altered when it is under chemical reaction?

When physical or chemical changes occur, they are generally accompanied by a transfer of energy. The law of conservation of energy states that in any physical or chemical process, energy is neither created nor destroyed. In other words, the entire energy in the universe is conserved.

Which type of energy is released by rubbing two sticks together?

Mechanical energy is energy associated with the motion and position of an object. When you strike a match, it moves through the air until it rubs against a surface. The rubbing produces the heat required to light the match. This is a transformation from mechanical energy to thermal (heat) energy.

When two sticks are rubbed together to start a fire energy is converted into energy?

Answer and Explanation: When two sticks are rubbed together, work is converted into heat.

Why spark is produced when?

A spark is created when the applied electric field exceeds the dielectric breakdown strength of the intervening medium. The exponentially-increasing electrons and ions rapidly cause regions of the air in the gap to become electrically conductive in a process called dielectric breakdown.

Why do rocks spark?

The kinetic energy in the stones is all forced from one stone to the other stone through the point of collision. If that point is very tiny, pushing all that energy through it heats it up and knocks it loose. A fragment of rock flakes off and flies away, still very hot. This is what the spark is.

How is heat energy produced when you rub two pieces of stone briskly?

How is heat energy produced when you rub two pieces of stone briskly? When two substances are moved upon each other, then there appears a force that tries to resist this motion. This force is known as friction force. Due to this rubbing action, the work is converted into heat, which is the form of energy.

What type of reaction releases energy?

exothermic
Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Exothermic reactions are accompanied by an increase in temperature of the reaction mixture.

Which reactions release energy anabolic or catabolic?

Catabolic reactions break down complex chemicals into simpler ones and are associated with energy release. Anabolic processes build complex molecules out of simpler ones and require energy.

What kind of energy is a scout rubbing sticks together to start a fire?

When I was a scout we were taught how to make fire by rubbing two sticks together. The friction occurring between them generates heat energy and if there is enough heat energy the wood at that point may smoulder and eventually catch fire.

Why don’t all rocks spark when they are struck together?

Not all rocks struck together will produce a spark. In fact, most rocks will not cause a spark when struck together. The reason is because most types of rock are “softer” than others, and would not cause a spark when struck together because they would just break away. This simply results in dust particles and chips of rock.

How do rocks break off when they hit each other?

The kinetic energy in the stones is all forced from one stone to the other stone through the point of collision. If that point is very tiny, pushing all that energy through it heats it up and knocks it loose. A fragment of rock flakes off and flies away, still very hot.

Why does steel burn when struck with a rock?

Steel will burn when struck with a rock because particles of steel is flaked off and the temperature is hot enough (produced from the stiking process) to ignite it, the spark produced is due to normal oxidation process.

What is the cause of a spark?

Of course, the cause of the spark itself is friction. And the material used needs to be able to hold together in order to cause enough friction to cause a spark, and not just be grinded down. No matter how smooth a rock/metal is, you can cause a spark because of the microscopic unevenness on its surface.