Workshop-6/20

Which of the following is an example of kinetic energy

• A compressed spring

• A charged battery

• A book resting on a table

• A rolling ball

Answer explanation

Kinetic energy is the energy of an object in motion

What is the definition of Potential energy

• The energy stored in an object due to its position or state

• The energy transferred between objects due to temperature change

• The energy an object possesses due to its motion

• The energy produced by the flow of electric charge

Answer explanation

Potential energy is stored energy

Which of the following is NOT an example of potential energy

• A rock at the top of a hill

• A compressed spring

• A stretched bowstring

• A car speeding down the highway

Answer explanation

Potential energy is stored energy. Once an object begins moving, the potential energy is converted to kinetic energy

Which of the following is NOT a type of system in thermodynamics

• Dynamic

• Isolated

• Closed

• Open

Answer explanation

There are only 3 types of systems: Open, closed, and isolated

All living organisms are considered as what type of system

• Isolated

• Closed

• Open

• Dynamic

Answer explanation

Living organisms exchange both energy and matter with their surroundings

Which type of system does not exchange matter or energy with its surroundings

• Closed

• Open

• Isolated

• None of the Above

A sealed pot of boiling water on a stove, where steam cannot escape but heat is transferred to the surroundings, is an example of which type of system?

• Closed

• Open

• Isolated

• None of the Above

Answer explanation

This is a closed system because the sealed pot ensures that no steam (matter in this case) is able to escape so there is no mass exchange with the surroundings. However the heat is transferred to the surroundings, so energy is exchanged in this scenario.

According to the First Law of Thermodynamics, what can energy not do?

• Be created or destroyed

• Be transferred from one place to another

• Be transformed from one form to another

• Be conserved

Answer explanation

First Law of Thermodynamics states that Energy can be transformed from one form to another, or transferred

from one place to another, but it cannot be created or destroyed

T/F: Light is a form of potential energy

• True

• False

Answer explanation

Light is considered a form of kinetic energy

Plants convert the kinetic energy of light into what

• Mechanical Energy

• Chemical Potential Energy

• Electrical Energy

• Thermal Energy