Pretest grade 8 energy transfers

Which of the following is the best unit to measure energy?

• celcius

• joule

• watt

• kilo-watt hour

Which of the following is the best unit to measure temperature?

• celcius

• joule

• watt

• kilo-watt hour

Which of the following contains more energy: one kilogram of coal or two kilograms of coal?

• One kilogram of coal

• Two kilograms of coal

Which of the following contains more energy: cold water or boiling water?

• cold water

• boiling water

Which process is called evaporation?

• a solid turns into a gas

• a liquid turns into a solid

• a liquid turns into a gas

• a gas turns into a liquid

Which of the following is not a way of transferring energy?

• Conduction

• Convection

• Radiation

• Condensation

Which of the following energy trannsfers doesn't require a medium to travel through?

• Conduction

• Convection

• Radiation

• Condensation

Which one shines brighter: a 5-watt bulb or a 15-watt bulb?

• a 15-watt bulb

• a 5-watt bulb

What is the best colour for a winter coat to keep you warm?

• dark-coloured coat

• light-coloured coat

Which action contributes significantly to climate change due to energy use?

• Using energy-efficient appliances

• Employing renewable energy sources

• Wasting electricity by leaving lights on unnecessarily

• Implementing energy-saving practices