30. PS.8 & 5 - SOL Review

What is the unit of energy in the International System of Units (SI)?

• Watt

• Joule

• Newton

• Pascal

Tags

VA.PS.5.a

Which of the following is an example of energy being stored?

• A car accelerating

• A stretched bow

• A running fan

• A burning candle

Tags

VA.PS.5.a

Explain how energy is transformed in a hydroelectric power plant.

• Water flows, turning turbines, generating electricity

• Sunlight heats water, creating steam, turning turbines

• Wind turns blades, generating electricity

• Coal is burned, heating water, creating steam

Tags

VA.PS.5.b

What is the primary form of energy transformation in a solar panel?

• Chemical to electrical

• Thermal to mechanical

• Light to electrical

• Mechanical to thermal

Tags

VA.PS.5.b

Which of the following best describes how energy is transformed in a battery-powered flashlight?

• Electrical to light

• Chemical to electrical to light

• Mechanical to electrical

• Thermal to light

Tags

VA.PS.5.c

Describe how energy transformation in a car engine meets societal needs.

• Converts chemical energy to mechanical energy for transportation

• Converts electrical energy to thermal energy for heating

• Converts light energy to chemical energy for storage

• Converts mechanical energy to electrical energy for power

Tags

VA.PS.5.c

What is the formula for calculating speed?

• Speed = Distance × Time

• Speed = Distance ÷ Time

• Speed = Time ÷ Distance

• Speed = Distance + Time

Tags

VA.PS.8.a

If a car travels 150 km in 3 hours, what is its average speed?

• 45 km/h

• 50 km/h

• 55 km/h

• 60 km/h

Tags

VA.PS.8.a

Which of Newton's laws explains why a book remains at rest on a table?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Newton's Law of Gravitation

Tags

VA.PS.8.b

A force of 10 N is applied to a 2 kg object. What is the acceleration of the object?

• 2 m/s²

• 5 m/s²

• 10 m/s²

• 20 m/s²

Tags

VA.PS.8.b