5/6 Science Test Energy And Force (Unit C Ch 1)

Force is a push or pull that can be exerted on an object. In this question, the correct answer is "pull," which refers to the action of exerting force to bring an object closer to oneself. Pulling involves applying force in the direction of oneself, causing the object to move towards the individual exerting the force.

This question is asking for the type of energy that is being described. The correct answer is "Elastic Potential." Elastic potential energy is the energy stored in an object when it is stretched or compressed. This type of energy is typically associated with objects like springs or rubber bands.

When diving from a diving board, the person is relying on potential gravitational energy to pull them into the water. Potential gravitational energy is the energy possessed by an object due to its position in a gravitational field. As the person jumps off the diving board, their potential energy is converted into kinetic energy, causing them to accelerate and fall towards the water. This gravitational force is what ultimately pulls them into the water.

This question is asking for the type of energy being described. The correct answer is thermal energy. Thermal energy refers to the energy that is created by the movement of particles within a substance. It is associated with heat and temperature.

Energy is the capacity or ability to do work. Work is defined as the transfer of energy when a force is applied to an object and it causes the object to move in the direction of the force. Therefore, energy is required to perform work on an object.

Friction is the force that opposes the motion between two surfaces in contact. It occurs when there is relative motion or an attempt of motion between the surfaces. Friction can be thought of as the opposite of slipperiness, as it prevents objects from sliding freely. It is responsible for the resistance experienced when trying to move objects on a surface and plays a crucial role in everyday activities such as walking, driving, and gripping objects.

Moving a block across sandpaper involves the resistance experienced by the block due to the rough surface of the sandpaper. This resistance is known as friction. Friction is the force that opposes the motion or attempted motion of objects that are in contact with each other. In this case, the sandpaper provides the necessary friction to prevent the block from sliding easily, making it a demonstration of friction.

Potential energy is a form of stored energy that an object possesses due to its position, condition, or composition. It is the energy that an object has the potential to convert into other forms of energy, such as kinetic energy. For example, a stretched rubber band has potential energy because it has the potential to snap back and release energy. Similarly, a ball held above the ground has potential energy because it has the potential to fall and convert that potential energy into kinetic energy.

This question is asking for the type of energy being described. The word "potential" indicates that the energy in question is stored or has the potential to be used. In contrast, kinetic energy refers to energy in motion. Therefore, the correct answer is potential energy.

A rock rolling down a hill is an example of kinetic energy because kinetic energy is the energy possessed by an object due to its motion. In this scenario, the rock is in motion as it rolls down the hill, therefore it has kinetic energy. Potential energy refers to the energy possessed by an object due to its position or condition, and thermal energy refers to the energy associated with the temperature of an object or a system.

A newton is a unit of measurement for force. It is named after Sir Isaac Newton, a renowned physicist and mathematician. The newton is defined as the amount of force required to accelerate a one-kilogram mass by one meter per second squared. This unit is commonly used in physics and engineering to quantify the strength or impact of a force.

According to the law of conservation of energy, energy cannot be created or destroyed, but it can only be converted from one form to another. This principle is known as the first law of thermodynamics. Therefore, the statement that energy can be created and destroyed is incorrect.

This question is asking for the type of energy that is being referred to. The correct answer is "Chemical" because it is the only option that specifically relates to energy stored in chemical bonds. Chemical energy is released or absorbed during chemical reactions, making it an appropriate answer in this context.

Rubber wheels cause more friction than steel wheels when creating a roller coaster cart. This is because rubber has a higher coefficient of friction compared to steel. The rough texture of rubber allows it to grip the track more effectively, resulting in increased friction. This friction is important for controlling the speed and movement of the roller coaster cart, ensuring a safe and thrilling ride. Steel wheels, on the other hand, have a smoother surface, which reduces the amount of friction generated.

A joule is a unit of measurement for energy. It is derived from the International System of Units (SI) and is used to quantify the amount of energy transferred or expended in various systems. The joule is defined as the amount of work done when a force of one newton is applied over a distance of one meter. It is commonly used in physics and engineering to measure energy in various forms such as mechanical, thermal, and electrical energy.

The explanation for the given correct answer is that if an object has more mass, it actually has more potential energy. This is because potential energy is directly proportional to mass. The greater the mass of an object, the greater its potential energy. Therefore, the statement that an object with more mass has less potential energy is false.

The given question is asking us to identify which options are forms of energy. Light, thermal, chemical, and electrical are all forms of energy. Light energy is the energy produced by electromagnetic waves, thermal energy is the energy associated with heat, chemical energy is the energy stored in chemical bonds, and electrical energy is the energy associated with the flow of electric charge. Pebble, on the other hand, is not a form of energy but rather a physical object.