Energy Conversion Mastery Quiz

In a cartoon episode, a character burned 50 calories while running. If 1 calorie equals 4.184 joules, how many joules did the character burn?

• 209.2 joules

• 150 joules

• 250 joules

• 184 joules

Tom and Jerry are playing a game. Tom uses a device that releases 1000 joules of energy. If Jerry wants to measure this energy in kcal (knowing that 1 kcal = 1000 calories, and 1 calorie = 4.184 joules), how much would it be?

• 0.239 kcal

• 2.39 kcal

• 23.9 kcal

• 239 kcal

If you have 2 kWh of energy, how many joules does this equal? (Note: 1 kWh = 3.6 million joules)

• 7.2 million joules

• 3.6 million joules

• 1.8 million joules

• 7200 joules

Convert 5 kWh to calories.

• 4,302,103.25 calories

• 860,421 calories

• 430,210.325 calories

• 8,604,206.5 calories

In a cartoon episode, a character uses a superpower that releases 15,000 joules of energy. If each superpower usage is equivalent to burning calories, how many kcal has the character burned? (Note: In this cartoon world, 1 cal = 4.184 joules and 1kcal = 1000 cal)

• 3.58 kcal

• 35.8 kcal

• 358 kcal

• 3,580 kcal