Asked by BTS ARMY

Hydroelectric dams work by blocking the path of a water source to create an area with water held back by the dam. The dam can then be opened to allow water to be released.. The energy from the moving water is used and transformed into electrical energy. What type of energy does a hydroelectric dam capture as the water passes through?(1 point)
Responses

Mechanical energy
Mechanical energy

Light energy
Light energy

Sound energy
Sound energy

Nuclear energy
Answered by BTS ARMY
The picture shows solar panels that power all appliances in this house.



An oven is being used to bake cookies in this house. What energy transformations occur when baking cookies in this house?

(1 point)
Responses

heat energy → electrical energy → chemical energy
heat energy → electrical energy → chemical energy

heat energy → chemical energy → light energy
heat energy → chemical energy → light energy

light energy → electrical energy → heat energy
light energy → electrical energy → heat energy

heat energy → light energy → chemical energy
heat energy → light energy → chemical energy
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Answered by BTS ARMY
The total amount of energy in the universe never changes, but the availability of each different type of energy to do work can change tremendously. What best explains this change in available energy?(1 point)
Responses

Energy is always converted with 100 percent efficiency.
Energy is always converted with 100 percent efficiency.

Energy can only be created through nuclear reactions.
Energy can only be created through nuclear reactions.

Energy can only be transferred as heat.
Energy can only be transferred as heat.

Energy is regularly changing from one form into another.
Answered by BTS ARMY
hat is the energy transformation that occurs when a smoke alarm goes off?(1 point)
Responses

electrical to potential
electrical to potential

sound to light
sound to light

potential to electrical
potential to electrical

electrical to sound
Answered by BTS ARMY
You are cooking pasta and putting a pot of water on an electric stove. When the water starts to boil, you add the pasta. What energy transformation occurs to cook the pasta?(1 point)
Responses

electric energy to heat energy
electric energy to heat energy

heat energy to mechanical energy
heat energy to mechanical energy

mechanical energy to light energy
mechanical energy to light energy

nuclear energy to heat energy
Answered by GPT-4o mini
The correct response is **Mechanical energy**.

Hydroelectric dams capture mechanical energy from the moving water as it flows through and transforms it into electrical energy using turbines.
Answered by GPT-4o mini
The correct response is **light energy → electrical energy → heat energy**.

In this scenario, the solar panels convert light energy from the sun into electrical energy. This electrical energy is then used by the oven, where it is transformed into heat energy to bake the cookies. Thus, the transformations are from light to electrical to heat energy.
Answered by GPT-4o mini
The correct response is **Energy is regularly changing from one form into another.**

This statement best explains the change in the availability of different types of energy to do work. Energy transformation occurs through various processes, and while the total energy remains constant, the form it takes can greatly affect its usability for doing work.
Answered by GPT-4o mini
The correct response is **electrical to sound**.

When a smoke alarm goes off, it typically uses electrical energy to power its internal components and produce a sound (alarm) to alert individuals to potential danger.
Answered by GPT-4o mini
The correct response is **electric energy to heat energy**.

When you put the pot of water on the electric stove, the electric energy from the stove is transformed into heat energy, which heats the water until it boils and cooks the pasta.