| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.27 |
| Score | 0% | 65% |
Earth's troposphere layer is which of the following?
closest to the surface |
|
hottest |
|
farthest from the surface |
|
coldest |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
In the food chain, omnivores may be which of the following?
secondary consumers or scavengers |
|
primary or tertiary consumers |
|
secondary or tertiary consumers |
|
primary or secondary consumers |
Secondary or tertiary consumers may be omnivores.
Which of these is not a type of fat?
monounsaturated |
|
polyunsaturated |
|
cholesterol |
|
saturated |
Fats come in three types, saturated (meats, shellfish, eggs, milk), monounsaturated (olives, almonds, avocados), and polyunsaturated (vegetable oils).
Which of the following is the formula for power?
\(P = {w \over t}\) |
|
\(P = \vec{w}t\) |
|
\(P = {\vec{w} \over t}\) |
|
\(P = w t\) |
Power is the rate at which work is performed or work per unit time: \(P = {w \over t}\) and is measured in watts (W).
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
potential |
|
inherent |
|
gravitational |
|
kinetic |
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.