1) A transfer of heat within a liquid or gas that involves warm particles moving in currents is
*
conduction
correction
convection
radiation
2) In which of the following methods of heat transfer is it necessary for the objects to be directly touching one another?
*
conduction
convection
radiation
connection
3) The heat from the Sun must pass through the vacuum of space before it reaches the Earth. Which process is illustrated in this example?
*
conduction
radiation
convection
none of the above
4) Many people have a tendency to think that heat and temperature are the same thing. However, this is not true. Heat describes
*
energy that flows from cooler objects to warmer objects.
the average amount of energy possessed by an object due to the potential energy stored in its bonds.
energy that flows from warmer objects to cooler objects.
the average amount of energy possessed by an object due to the motion of its particles.
5) The temperature of an object is directly related to
*
the potential energy of its chemical bonds.
the volume of the object.
the motion of its particles.
the mass of the object.
Energy Transformation
6) A flashlight produces light using energy from the batteries. In which order does the energy change form?
*
from electric to chemical to light energy
from electric to light to chemical energy
from chemical to electric to light energy
from light to electric to chemical energy
7) Robin is swinging back and forth from a trapeze. In which of the following situations is his kinetic energy being transformed into potential energy?
*
when his height is not changing and his speed is zero
when his speed is increasing and his height is decreasing
when his height is increasing and his speed is decreasing
when his height and speed are both equal to zero
8) In hydroelectric power plants, the energy from moving water is converted into electric power. What kind of energy transformation occurs when the energy is converted?
*
heat to electrical
electrical to mechanical
light to electrical
mechanical to electrical
9) Scientists have designed solar cells to trap solar energy and convert it to _____ energy.
*
wind
electrical
chemical
solar
10) Which statement is true about energy changes?*
*
Energy can be created but not destroyed.
Energy can be created and destroyed.
Energy can be destroyed but not created.
Energy cannot be created or destroyed.