Fossil Fuels
When coal was formed, which material was absent from the layers of sediment and organic material?
Oxygen
What is energy?
The ability to do work.
What is the unit of measurement for energy?
Joules
The main resource used for power plants in Alberta is:
Coal
What nutrient is our body’s first choice when looking for a source of energy?
Carbohydrates
What is needed to form coal?
pressure and heat
The ____________________ energy of moving water spins the blades of a turbine.
Kinetic energy
Efficency is expressed as a ?
percentage
What is the usual method of transporting natural gas from Alberta to Ontario?
pipeline
Which type of fat is better to eat to avoid heart disease?
unsaturated fats
Anthracite is a type of ?
Coal
What do green plants use solar energy for?
The production of food.
An energy conversion device wastes 35J of energy for every 100 J put in, what would be its efficiency?
35% waste
65% useful
How does acid precipitation affect lakes in Canada?
increases acid content
Which macronutrients in foods contains the most energy?
fats
Another name for petroleum is?
Crude Oil
What is the main reason perpetual motion machines cannot exist?
Friction
How much electric energy does a 240W fan use if it is left on for two hours?
480 W/hours
What converter is common to power plants fuelled by wind, hydro, fossil fuels and nuclear fission?
turbine/generator
What is a high source of saturated fats?
butter, coconut oil, fatty cuts of meat, bacon, cheese.
What are fossil Fuels made of?
Hydrocarbons
Cellular respiration is very similar to combustion reactions. What is one thing they have in common? What is one difference between them?
Common: they both require oxygen and produce carbon dioxide, water, and energy.
Difference: Respiration is a controlled biochemical process that takes place in living cells, where as combustion is a uncontrolled chemical process that takes place outside of living cells and things
An aquarium light bulb uses 7J of electric energy in one second. How many watts of power does this light bulb consume in 3s
21 Watts
Which ways is electrical energy commonly produced in Canada?
hydro-electric, thermo-electric, thermonuclear
Many chemical reactions occur in your body. What is the sum of these energies known as?
Metabolism