4th Grade Science › Convert Energy Forms
Mike designed a new firework for the holiday display. He spent weeks coming up with the perfect design to convert chemical energy into three forms of energy. Which three types of energy does a firework emit?
Heat, light, and sound
Sound, light, and mechanical
Light, chemical, and sound
Electric, sound, and heat
Fireworks emit three types of energy. The first is sound energy, which is caused by the chemical explosion and can be heard as a loud boom. The fireworks are ignited by lighting the central fuse that burns when the fireworks rise into the sky. Burning these different materials produces light. The colors seen in the show are determined by the amount of energy in heating different chemicals and fuel. The explosion also produces heat or thermal energy.
Meredith has to design a device that converts energy between two different forms. She decides she wants to convert electrical energy into sound and light. Which invention should she model her design after?
A battery-powered alarm clock
A television
A firecracker
A wood-burning stove
The television is an excellent invention for Meredith to use as a model for her device. The television converts electrical energy into sound and light, so it can relay the programming the viewer would like to watch. Meredith can think about how the electricity is transformed and try to create something that lights up and makes noise.
Mike designed a new firework for the holiday display. He spent weeks coming up with the perfect design to convert chemical energy into three forms of energy. Which three types of energy does a firework emit?
Heat, light, and sound
Sound, light, and mechanical
Light, chemical, and sound
Electric, sound, and heat
Fireworks emit three types of energy. The first is sound energy, which is caused by the chemical explosion and can be heard as a loud boom. The fireworks are ignited by lighting the central fuse that burns when the fireworks rise into the sky. Burning these different materials produces light. The colors seen in the show are determined by the amount of energy in heating different chemicals and fuel. The explosion also produces heat or thermal energy.
Meredith has to design a device that converts energy between two different forms. She decides she wants to convert electrical energy into sound and light. Which invention should she model her design after?
A battery-powered alarm clock
A television
A firecracker
A wood-burning stove
The television is an excellent invention for Meredith to use as a model for her device. The television converts electrical energy into sound and light, so it can relay the programming the viewer would like to watch. Meredith can think about how the electricity is transformed and try to create something that lights up and makes noise.
Raena designed a new device that can convert energy forms. Her design can take electrical energy and turn it into thermal or heat energy. Which answer choice(s) are an example of this conversion?
A water source in the park "runs" water.
A phone records a voicemail message.
A gas oven bakes a pizza for dinner.
A space heater heats a room in your home.
Thermal energy is transferred to other objects causing them to heat up. A space heater is plugged into the wall, so it uses electrical power and converts it into heat energy to warm the room. The other response options have nothing to do with thermal energy and heating something.
Gasoline is put into cars to make them run. The ability of gas to power vehicles is an example of ________ energy. It is transformed into mechanical energy, sound, and light.
chemical
electrical
mechanical
solar
In the car's engine, there is a transformation of chemical energy from the combustion of the gasoline into heat, which powers the engine to run. This energy is transformed into mechanical energy (or motion) when the car moves, light energy, and sound energy.
Raena designed a new device that can convert energy forms. Her design can take electrical energy and turn it into thermal or heat energy. Which answer choice(s) are an example of this conversion?
A water source in the park "runs" water.
A phone records a voicemail message.
A gas oven bakes a pizza for dinner.
A space heater heats a room in your home.
Thermal energy is transferred to other objects causing them to heat up. A space heater is plugged into the wall, so it uses electrical power and converts it into heat energy to warm the room. The other response options have nothing to do with thermal energy and heating something.
Gasoline is put into cars to make them run. The ability of gas to power vehicles is an example of ________ energy. It is transformed into mechanical energy, sound, and light.
chemical
electrical
mechanical
solar
In the car's engine, there is a transformation of chemical energy from the combustion of the gasoline into heat, which powers the engine to run. This energy is transformed into mechanical energy (or motion) when the car moves, light energy, and sound energy.
Marge wants to develop a device to convert energy forms and wants it to have little to no negative impact on the environment. Which type of energy should she use as her primary power source to accomplish this?
Solar
Wind
Hydropower
All of the answer choices are correct.
None of the answer choices are correct.
Many companies and even home inventors are turning to renewable resources to power their creations. Renewable resources have less of a negative impact on the planet when compared to traditional fossil fuels such as oil and coal. Solar power, wind energy, and hydropower are all examples of clean energy sources that Marge could use for her device.
What is energy?
A measure of the capability to produce change
Move from one place to another
Having the potential to develop into something great in the future
A measure of the amount of matter inside an object
Energy is the ability to do work or the ability to move an object. Energy cannot be made or destroyed; it can only be changed into different forms. Energy can be classified in two ways. First is potential energy, which is the amount of energy something has stored inside it. Next is kinetic energy. Kinetic energy is the energy of an object in motion. Anything that is moving has kinetic energy.