Science Invention

1. What happens to wet wood when it is burned?

• a) Burns efficiently

• b) Releases volatile gases

• c) Smokes and smolders

• d) Turns into charcoal

2. What is charcoal primarily composed of?

• a) Ash

• b) Water

• c) Carbon

• d) Cellulose

3. What remains after the wood has completely burned in a fire?

• a) Volatile gases

• b) Embers

• c) Charcoal

• d) Ash containing minerals

 

4. During pyrolysis, wood releases gases such as methane and carbon monoxide. If each piece of wood releases 0.5 cubic meters of gas and the Scouts burned 8 pieces, how much gas was released in total?

• a) 2 cubic meters

• b) 3 cubic meters

• c) 4 cubic meters

• d) 6 cubic meters

5.  In industrial processes, why is coal preferred over wood as a fuel source?

A. Coal burns at a lower temperature than wood

B. Coal produces less pollution than wood

C. Coal has a higher energy density than wood

D. Coal is easier to transport than wood

• A. Coal burns at a lower temperature than wood

• B. Coal produces less pollution than wood

• C. Coal has a higher energy density than wood

• D. Coal is easier to transport than wood