ET, Earth in Space and More

Front

What is the process of photosynthesis and what type of energy transformation does it involve?

Back

Photosynthesis is the process by which green plants convert radiant energy from the sun into chemical energy in the form of glucose. The energy transformation involved is radiant -> chemical.

Front

What energy conversion occurs in a car when it operates?

Back

In a car, the energy conversion that takes place is from chemical energy (in fuel) to mechanical energy (to power the car's movement).

Front

What type of energy transformation occurs in an electric oven?

Back

In an electric oven, the energy transformation is from electrical energy to thermal energy (heat).

Front

What form of energy is stored in food, such as grass, that sheep consume?

Back

The form of energy stored in food like grass is chemical energy, which is released when the sheep break down the molecules during digestion.

Front

What type of energy conversion does a battery perform?

Back

A battery converts chemical energy into electrical energy.

Front

Define radiant energy and provide an example of its transformation.

Back

Radiant energy is energy that travels by waves or particles, particularly electromagnetic radiation such as light. An example of its transformation is during photosynthesis, where radiant energy is converted into chemical energy.

Front

What is mechanical energy and how is it generated in machines?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object. It is generated in machines through the conversion of other forms of energy, such as chemical energy in fuel.

Front

Explain the concept of thermal energy and its significance in everyday applications.

Back

Thermal energy is the internal energy present in a system due to its temperature. It is significant in everyday applications such as cooking, heating, and in engines where it is converted from other energy forms.

Front

What is chemical energy and where is it commonly found?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like atoms and molecules. It is commonly found in fuels, food, and batteries.

Front

Describe the energy transformation that occurs in a light bulb.

Back

In a light bulb, electrical energy is transformed into light energy (radiant energy) and thermal energy (heat).