Fuels Quiz 2

Gasoline, Diesel and Coal are all examples of what?

• hydrocarbons

• carbohydrates

• fluorocarbons

• greenhouse gases

Combustion occurs when a fuel reacts with what?

• Carbon

• Hydrogen

• Oxygen

• Carbon Dioxide

Why does the energy in sugar get released (burns) much faster than the energy in fats?

• Fats store more energy

• Fats are the most efficient way to store energy

• Sugar contains very little energy

• Sugar contains oxygen

What element in a fuel determines how much energy can be released in combustion?

• Carbon

• Hydrogen

• Oxygen

• Water

Combustion results in the creation of what 2 compounds?

• water

• carbonate

• carbon dioxide

• oxygen

In our candle experiments, when the burning candles lost mass where did the mass go?

• mostly the carbon left as carbon dioxide

• mostly the wax was changed to wax gases

• the energy of the candle left

• it went into the water

A calorie is defined as what?

• energy needed to raise a ml of water 1 deg F

• energy needed to raise a liter of water 1 deg C

• energy needed to raise a liter of water 1 deg F

• how we burn energy in our bodies

If I lift 1 kg 1 meter upwards I have used how much energy?

• 1 Joule

• 10 Joules

• 1 KCal

• 1 Watt

Earth's gravity is always pulling at everything downward at about what acceleration?

• 1 m/s/s

• 10 m/s/s

• 1 kg/s

• 10 kg/s

What is the only difference between a Newton and a Joule?

• A joule is a newton applied for 1 meter

• A Newton refers to gravitational force

• A Newton refers to 1 kg when a Joule is 10 Kg

• Newtons are side to side forces and a Joule is an up and down force