Energy Units and Conversions

The video tutorial explains how energy in food is measured using joules and kilojoules. It discusses the transition from using calories to kilojoules as the standard unit of measurement. The video also provides conversion examples between calories and kilojoules, highlighting the relationship between the two units.

What is the basic unit of energy used to measure food energy?

• Joules

• Volts

• Watts

• Calories

How many joules are there in one kilojoule?

• 10,000

• 100

• 1000

• 1,000,000

Which unit is more commonly used on modern food labels?

• Volts

• Calories

• Kilojoules

• Watts

What is the conversion factor from calories to kilojoules?

• 1 calorie = 2.5 kilojoules

• 1 calorie = 3.5 kilojoules

• 1 calorie = 4.184 kilojoules

• 1 calorie = 5.184 kilojoules

Why might food labels include both calories and kilojoules?

• To confuse consumers

• To make the label look more scientific

• To provide a conversion reference

• To comply with outdated regulations

If you have 120 calories, how many kilojoules is that equivalent to?

• 600 kilojoules

• 700 kilojoules

• 400 kilojoules

• 502 kilojoules

How would you convert 4,300 kilojoules back to calories?

• Divide by 4.184

• Multiply by 4.184

• Add 4.184

• Subtract 4.184

What is the result of converting 4,300 kilojoules to calories?

• 1100 calories

• 1028 calories

• 1000 calories

• 1200 calories