| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
Which of the following would you find in the side view mirror of a car?
concave mirror |
|
concave lens |
|
convex mirror |
|
convex lens |
A concave (or converging) mirror bulges inward and focuses reflected light on the mirror's focal point where the mirror's angles of incidence converge. In contrast, a convex (or diverging) mirror bulges outward and diffuses the light waves that strike it. A common use of a concave mirror is in a reflecting telescope, a common use of a convex mirror is in the side view mirror of a car.
Which of the following states of matter exists at the lowest temperature?
solid |
|
none of these |
|
liquid |
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gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
Force is measured in newtons (N) with 1 N being the force required to impart an acceleration of:
1 m/s to a mass of 1 kg |
|
1 m/s2 to a mass of 1 kg |
|
1 m/s2 to a mass of 1 kg/s2 |
|
1 mph to a mass of 1 kg |
Weight is a force that describes the attraction of gravity on an object. Force is measured in newtons (N) with 1 N being the force required to impart an acceleration of 1 m/s2 to a mass of 1 kg.
In taxonomy, domains are the broadest classification of life. How many domains are there?
3 |
|
6 |
|
dozens |
|
5 |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Most digestion takes place where?
mouth |
|
small intestine |
|
stomach |
|
large intestine |
The small intestine is where most digestion takes place. As food travels along the small intestine it gets broken down completely by enzymes secreted from the walls. These enzymes are produced in the small intestine as well as in the pancreas and liver. After the enzymes break down the food, the resulting substances are then absorbed into the blood via capillaries in the small intestine walls.