Science Energy Quiz For 9 Year's Students

Wood is not a type of energy because it is a material that can be used as a fuel source to produce energy, such as through combustion. However, it is not an inherent form of energy itself. Light, sound, and electricity are all forms of energy that can be measured and harnessed for various purposes.

Electricity involves the movement of subatomic particles in an atom. The subatomic particle involved in electricity is the electron. Electrons are negatively charged particles that orbit the nucleus of an atom. When an electric current flows, it is the movement of these electrons that creates the flow of electricity. Neutrons and protons, on the other hand, are not involved in the movement of electricity as they are located in the nucleus and do not participate in electrical conduction.

The unit of energy is the joule. It is a derived unit in the International System of Units (SI) and is used to measure energy, work, and heat. It is defined as the amount of work done when a force of one newton is applied over a distance of one meter in the direction of the force. The joule is commonly used in physics and engineering to quantify energy transfers and conversions.

When a fan heater is running, electrical energy is being transformed into heat energy. This is because the electrical energy is used to power the heating element in the heater, which in turn produces heat. The heat is then transferred to the surrounding air, warming up the room.

The correct answer is elastic potential energy. Springs have the ability to store potential energy when they are stretched or compressed. This potential energy is called elastic potential energy. When the springs in the crazed mouse toy are compressed or stretched, they store potential energy that can be released when the springs return to their original shape.

When we use a battery to power a crazed pink mouse toy, the battery converts chemical energy into electrical energy. This electrical energy is then transformed into kinetic energy, which is the energy of movement. In this case, the electrical energy powers the toy to move up and down, resulting in kinetic energy.

A kilojoule is a unit of energy equal to 1000 joules. Therefore, there are 1000 joules in a kilojoule.

The word 'conservation' in the sentence means keeping the total amount the same. This is because the law of conservation of energy states that in a closed system, the amount of energy remains constant over time. This means that energy can change from one form to another, but the total amount of energy in the system remains unchanged. Therefore, 'conservation' in this context refers to the preservation or maintenance of the total amount of energy.

When you eat an ice cream, your body uses the chemical energy in it. This is because the ice cream contains molecules that can be broken down and used as a source of energy by your body. As you digest the ice cream, enzymes in your body break down the complex molecules into simpler forms, releasing energy that can be used for various bodily functions. Therefore, the chemical energy stored in the ice cream is converted into usable energy by your body.

A small glass of lemonade contains about 450kJ of energy. This is a reasonable amount considering that the average teenage boy needs 10,000 to 15,000kJ a day. It is also important to note that girls need less energy than boys, so the amount of kJ in a small glass of lemonade would be even less for them. Therefore, 450kJ seems like a suitable estimate for the energy content of a small glass of lemonade.