39 Questions
What is energy?
The ability to do work
How does a soccer player use energy to move a ball?
By kicking the ball
What does the Sun's energy help plants do?
Make food and grow
What is potential energy?
Stored energy at rest
How does the Sun's energy affect snow and ice?
It turns them into vapor
What is kinetic energy?
Energy of motion
What type of change can energy from fire cause in wood?
Chemical change
Why do all living things need energy to survive?
To carry out life processes
What form does Earth receive the Sun's energy in?
Light
Which of the following best describes energy?
The ability to cause matter to move, grow, or change
What type of energy does a toy car at the top of a hill have?
Potential energy
How does the Sun's energy primarily affect plants?
It helps in the process of photosynthesis
In what form does the Sun's energy come to Earth?
Light
What kind of change can energy from fire cause in wood?
Chemical change
Which form of energy can turn water into vapor?
Heat energy
What process does the Sun's energy help with in plants?
Photosynthesis
Which of the following represents kinetic energy?
$\frac{1}{2}mv^2$
What kind of energy does a soccer player use to kick a ball?
Kinetic energy
What happens to a toy car at rest when it is moved to the top of a hill?
It stores more potential energy
Energy is only the ability to do physical work.
False
The Sun's energy primarily helps plants grow by providing heat.
False
All living things need energy from the Sun to survive.
True
Potential energy is only present when an object is in motion.
False
The energy from the Sun can change ice directly into a gas without becoming a liquid first.
True
Energy from fire can only cause physical changes in wood.
False
Kinetic energy is the energy an object has due to its position or state.
False
Potential energy is also called stored energy.
True
Light is not a form of energy.
False
The Sun's energy primarily affects plants by providing them with nutrients.
False
Which type of stress occurs when a twisting force is applied to a member or shaft?
Torsion
What is the measure of the degree of torsion experienced by a shaft?
Shear strain
In which type of stress do shear stresses occur along the length of the shaft?
Torsion
Which type of stress occurs when a force is applied in the direction of the length of a material or structure?
Tension
What is the primary role of torsion, tension, and compression in determining the behavior of materials?
Structural integrity and mechanical behavior
In which type of stress does the material try to shorten and decrease in length?
Compression
What is the primary axis for tension stress?
The length of the material
Which type of stress is often used in conjunction with bending stress and shear stress?
Tension
In which process can compression stress be beneficial?
Extrusion
What type of stress results when a force is applied with the opposite direction as the material's primary axis?
Torsion
This quiz covers the concept of energy and its role in doing work, causing motion, and creating changes in matter. It discusses how energy is utilized by various forces and processes. The quiz is prepared by Mr. Francis P. Balote.
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