| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
The energy posessed by a thrown baseball is an example of what kind of energy?
potential |
|
kinetic |
|
gravitational |
|
transitional |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
Plant cells may generate energy through which of the following?
anaerobic respiration |
|
photosynthesis |
|
aerobic respiration |
|
all of these |
Some plant cells produce their own energy through photosynthesis which is the process by which sunlight, carbon dioxide, and water react to make sugar and oxygen. Animal cells cannot produce their own energy and, instead, generate energy when mitochondria consume outside sugar and oxygen through aerobic respiration.
Convert -20C° to F°.
78 |
|
36 |
|
-36 |
|
-4 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(-20) + 32\)
\(F° = {-180 \over 5} + 32\)
\(F° = -36 + 32 = -4\)
Water coming to a boil on a stove, ice melting, and steam from a cup of coffee are all examples of which of the following?
radiation |
|
reflection |
|
convection |
|
conduction |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
Which of the following temperatures is least like the others?
absolute zero |
|
0K |
|
-273°C |
|
32°F |
Absolute zero is the coldest possible temperature in the universe. In the Kelvin scale, absolute zero is 0K and in the Celsius scale it is -273°C.