Question

14 the transfer of thermal energy through direct contact between particles is called
a) convection
b) radiation
c) conduction
d) evaporation
15 the transfer of thermal energy through the movement of fluids (liquids and gases) is called:
a) conduction
b) convection
c) radiation
d) friction

1. the circular flow of fluid created when warm fluid rises and cool fluid sinks is called a:

a) heat wave
b) thermal current
c) convection current
d) energy cycle

1. waves of energy that can travel through empty space, including light and heat, are called:

a) sound waves
b) electromagnetic waves
c) thermal waves
d) mechanical waves

1. energy that travels as waves through space without requiring a medium is called:

a) conductive energy
b) convective energy
c) radiant energy
d) mechanical energy

1. the transfer of thermal energy through electromagnetic waves is called:

a) conduction
b) convection
c) radiation
d) friction

1. what happens to the potential energy of a rollercoaster as it goes down the first hill?

a) it disappears
b) it is transformed into kinetic energy
c) it is destroyed
d) it increases

Explanation:

1. Conduction is the transfer of thermal energy through direct contact between particles.
2. Convection is the transfer of thermal energy through the movement of fluids (liquids and gases).
3. A convection current is the circular flow of fluid created when warm fluid rises and cool fluid sinks.
4. Electromagnetic waves are waves of energy that can travel through empty space, including light and heat.
5. Radiant energy is energy that travels as waves through space without requiring a medium.
6. Radiation is the transfer of thermal energy through electromagnetic waves.
7. As a rollercoaster goes down the first hill, its potential energy is transformed into kinetic energy (due to the law of conservation of energy).

Answer:

1. C. Conduction
2. B. Convection
3. C. Convection current
4. B. Electromagnetic waves
5. C. Radiant energy
6. C. Radiation
7. B. It is transformed into kinetic energy