How does a steam engine propel a boat using thermal energy?
a. Thermal energy is reduced by the engine to avoid overheating.
b. Thermal energy is absorbed by the engine to create power to do mechanical
work.
c. Thermal energy is multiplied by the engine to create power to do mechanical
work.
d. Thermal energy is converted into mechanical energy by the engine to do
mechanical work.
3. Which of the following is TRUE when heat is absorbed by an object?
a. The temperature of object decreases.
b. The thermal energy of the object increases.
c. The number of particles of the object increases.
d. The amount of internal energy in the object remains the same.
4. Which of the following ways speeds up the motion of the particles of an object
and increases its internal energy?
a. Put the object over the flame. c. Put the object in an ice bath.
b. Place the object in a cool area. d. Place the object in a dark cold area
5. Which is the CORRECT order of cycle in a four-stroke diesel engine?
a. Intake-Compression-Power-Exhaust
b. Intake-Exhaust-Compression-Power
c. Power-Intake-Compression-Exhaust
d. Power-Intake-Exhaust-Compression
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Answer:
3 c
4 b
5 a
Explanation:
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