Science Energy in Our Built Environment

Energy can be either kinetic or _______.

• Thermal

• Potential

• Chemical

• Electrical

Which of the following is an example of kinetic energy?

• A car parked at the top of a slope

• A raised weight

• A car accelerating

• A pulley

What does gravity do?

• Repels objects with mass

• Attracts items that have mass or energy

• Changes the color of objects

• Increases temperature

Which force is responsible for the interaction of particles with an electrical charge?

• Gravity

• Electromagnetism

• Strong interaction

• Weak interaction

What is the role of strong interaction?

• It causes objects to float

• It holds the nucleus of an atom together

• It creates magnetic fields

• It generates electricity

What is meant by 'self weight' in the context of forces on structures?

• The weight of the structure itself

• The weight of external objects

• The weight of the air

• The weight of the foundation

Imposed loads are typically considered to be:

• Permanent

• Temporary

• Constant

• Negligible

Live loads can be described as:

• Static

• Dynamic

• Fixed

• Invariable

In the example, what is the calculated force if the truck's acceleration is 0.3 m/s²?

• 11,400 N

• 3,800 N

• 38,000 N

• 1,140 N

If a car travels 600 meters in 240 seconds, what is its velocity?

• 2.5 m/s

• 3.0 m/s

• 2.0 m/s

• 1.5 m/s