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Energy NMBM
Energy, Machines, and Motion
Question | Answer |
---|---|
What is energy? | the ability to cause a change or to do work |
What is the evidence that energy has been used? | Of course, if something has changed. |
Which type of energy is stored and ready for use? | Potential |
Which type of energy depends on the position and the chemical composition of a substance? | Potential |
Which type of energy depends on an objects mass and speed? | Kinetic |
Which type of energy is identified with motion? | Kinetic |
What are the two major types of energy? | Potential and Kinetic |
Which form of energy results from vibrations in solids, liquids, or gas and travels in waves? | Sound energy |
Which form of energy moves objects? | Mechanical Energy |
Which form of energy is stored in the chemical composition of matter? | Chemical Energy |
Which form of energy is based on the movement of the particles of matter? | Thermal Energy |
Which form of energy travels through empty space and includes visible light, x-rays, and microwaves? | Electromagnetic Energy |
Which form of energy is based on the splitting or combining of the nucleus of atoms? | Nuclear Energy |
A battery is an example of which form of energy? | Chemical Energy |
Which of the two major types of energy does a battery represent? | Potential Energy |
Energy is not created or destroyed, only changes from one form to anther. | The Law of Conservation of Energy |
Two reasons why solar energy are not commonly used | The materials used are expensive and are not very efficient. |
Two reasons advantages of solar and wind energy. | Solar and wind energy supply is not limited and they do not produce harmful waste products |
What is the MEASURE of the average kinetic energy of a substance? | Temperature |
What instrument is used to measure the average kinetic energy of a substance? | Of Course! A thermometer! |
What happens to the temperature if the particles of a substance moves faster? | The temperature increases |
What happens to the particles of a substance if the temperature increases? | The particles move faster. |
What is the flow of energy from high temperature to low temperature? | Heat |
The process that moves thermal energy from one object to another when they are physically touching | Conduction |
The materials that transfer energy easily | Conductors |
The materials that do not transfer energy easily | Insulators |
The process transfers thermal energy by the movement of particles in a liquid or gas. | Convection |
The energy that travels through empty space as electromagnetic waves | Radiation |
Force | A push or a pull |
Work | Apply a for4ce to an object and the object moves a distance |
A device that helps people to do work | Machine |
Supports some of the weight of an object going up | An inclined plane |
A Lever | A rigid bar that rotates around a fixed point |
A pulley | A grooved rim with a rope around it |
Two inclined planes back to back, must be moving to be affective | A wedge |
A screw | An inclined plane wrapped around a cylinder |
The "trade off" in using a simple machine | Moving a longer distance or using a longer rope for less force |
Two or more simple machines working together | Compound or complex machine |
To acquire a systematic knowledge of the world | The goal of science |
To apply knowledge of science and math in designing products that meet a human need. | The goal of technology |
Identify a need; Generate a design; Planning and building; Test and Evaluate... | Technological Design |