Energy III - JSS1 Basic science Past Questions and Answers - page 1
When you turn on a light bulb, what type of energy transformation occurs?
Electrical to light and heat energy
Light to electrical energy
Heat to electrical energy
Kinetic to potential energy
What law governs the transformation of energy?
Law of gravity
Law of thermodynamics
Law of conservation of energy
Law of relativity
When you eat food, what type of energy transformation takes place in your body?
Chemical to kinetic energy
Electrical to thermal energy
Potential to kinetic energy
Mechanical to electrical energy
What happens to energy during a transformation?
It is created
It is destroyed
It is transformed from one form to another
It disappears entirely
Which field benefits from understanding energy transformations?
Agriculture
History
Physics
Psychology
Which of the following is not an example of energy transformation?
Turning on a blender
Burning wood in a fireplace
Playing a video game
Charging a smartphone
How does understanding energy transformations benefit society?
Understanding energy transformations helps society develop more efficient technologies, reduce energy waste, and address environmental challenges. For example, it enables the design of energy-efficient appliances, transportation systems, and renewable energy sources, ultimately leading to a more sustainable future.
Can you provide an everyday example of energy transformation?
When you charge your smartphone, electrical energy from the charger is transformed into chemical energy stored in the phone's battery. Later, when you use the phone, the chemical energy is transformed back into electrical energy to power the device.
Why is the conservation of energy important in energy transformations?
The conservation of energy is crucial because it ensures that energy is neither created nor destroyed during transformations, only converted from one form to another. This principle underpins the functioning of countless natural processes and human-made technologies, guiding efficient energy use and sustainability efforts.