Energy Transformation Quiz! Trivia

1.

According to the ____________________________, energy is never created or destroyed.

A.

Law of conduction of energy
B.

Law of transformation of energy
C.

Law of independment of energy
D.

Law of conservation of energy
E.

None of the above

Correct Answer
D. Law of conservation of energy

Explanation
The law of conservation of energy states that energy cannot be created or destroyed, but it can only be transformed from one form to another. This means that the total amount of energy in a closed system remains constant. This principle is a fundamental concept in physics and is supported by various scientific experiments and observations.

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2.

______________________ moves from the hot chocolate to the cooler surrounding.

A.

Light energy
B.

Chemical energy
C.

Kinetic energy
D.

Electrical energy
E.

Thermal energy

Correct Answer
E. Thermal energy

Explanation
Thermal energy moves from the hot chocolate to the cooler surrounding because thermal energy is the energy associated with the motion of particles within a substance. When the hot chocolate is in contact with the cooler surrounding, the particles in the hot chocolate transfer their kinetic energy to the particles in the surrounding, causing them to move faster and increase their temperature. This transfer of energy results in the hot chocolate cooling down and the surrounding warming up, demonstrating the movement of thermal energy.

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3.

What kind of device transforms kinetic energy into electrical energy?

A.

Generater
B.

Turbine
C.

Computer
D.

None of the above

Correct Answer
A. Generater

Explanation
A generator is a device that converts mechanical energy, such as kinetic energy, into electrical energy. It does this by using the principles of electromagnetic induction, where a coil of wire is rotated within a magnetic field. This rotation creates a changing magnetic field, which induces an electric current in the wire. Therefore, a generator is the correct answer as it transforms kinetic energy into electrical energy.

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4.

When something is high up, it has less potential energy.

Correct Answer
False

Explanation
When something is high up, it actually has more potential energy. Potential energy is the energy possessed by an object due to its position or height above the ground. The higher an object is, the greater its potential energy, as it has the ability to do more work when it falls or moves downward. Therefore, the statement "When something is high up, it has less potential energy" is incorrect.

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5.

What kind of energy does a lightning strike have?

Correct Answer
Electrical energy

Explanation
A lightning strike possesses electrical energy. Lightning is a natural electrical discharge that occurs during a thunderstorm. It is caused by the separation of positive and negative charges within a cloud, or between a cloud and the ground. When the electrical potential difference becomes too great, it results in a rapid discharge of electricity, creating a lightning bolt. This discharge releases a tremendous amount of electrical energy in the form of heat, light, and sound.

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6.

Energy transformations occur ______________ around you.

A.

2 hours a day
B.

18 days
C.

7 minutes
D.

1 month
E.

Constantly

Correct Answer
E. Constantly

Explanation
Energy transformations occur constantly around you. This means that energy is constantly being converted from one form to another, such as from potential energy to kinetic energy or from electrical energy to light energy. Energy transformations are happening all the time in various processes and systems, whether it's the movement of objects, the generation of electricity, or the functioning of our bodies.

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7.

When you listen to the radio, there are five energy steps. They are electrical energy of the radio signal, kinetic energy from the speaker, sound energy of the air, the kinetic energy of the eardrum and fluid, _______ energy of the brain and nerve cells.

Correct Answer
electrical energy

Explanation
The missing word in the sentence is "electrical energy". The explanation for this answer is that the five energy steps mentioned in the question are all related to the transfer and conversion of energy in the process of listening to the radio. The electrical energy of the radio signal is converted into kinetic energy by the speaker, which then produces sound energy in the air. This sound energy is then converted into kinetic energy in the eardrum and fluid, which ultimately leads to the generation of electrical signals in the brain and nerve cells, representing the perception of sound. Therefore, the missing word should be "electrical energy" to complete the sequence of energy steps.

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8.

Every day you use electrical energy.

Correct Answer
True

Explanation
This statement is true because electrical energy is commonly used in our daily lives. We rely on electricity for various activities such as lighting our homes, powering electronic devices, and operating appliances. From turning on a light switch to charging our smartphones, electrical energy is an integral part of our everyday routines.

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9.

A coal-burning power plant transforms the __________ energy in coal into electrical energy.

Correct Answer
chemical

Explanation
A coal-burning power plant transforms the chemical energy in coal into electrical energy. This is because coal is a fossil fuel that contains stored energy in the form of chemical bonds. When coal is burned, these chemical bonds are broken, releasing heat energy. This heat energy is then used to produce steam, which drives a turbine connected to a generator, ultimately converting the heat energy into electrical energy.

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