| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.40 |
| Score | 0% | 68% |
212°F is how many °C?
\(135 {5 \over 9}\) |
|
100 |
|
0 |
|
-100 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (212 - 32)\)
\(C° = {5 \over 9} (180) = {{180 \times 5} \over 9}\)
\(C° = {900 \over 9}\)
\(C° = 100\)
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
molecule |
|
atom |
|
element |
|
compound |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
Earth's history is divided into time periods, which of these is the longest time period?
eon |
|
era |
|
epoch |
|
age |
The Earth is approximately 4.6 billion years old and its history is divided into time periods based on the events that took place and the forms of life that were dominant during those periods. The largest graduation of time is the eon and each eon is subdivided into eras, eras into periods, periods into epochs, and epochs into ages.
A biological community of interacting organisms and their physical environment is known as:
population |
|
community |
|
ecosystem |
|
biome |
An ecosystem is a biological community of interacting organisms and their physical environment. This includes both the biotic (living) and abiotic (non-living).
The small intestine utilizes enzymes produced where?
pancreas |
|
all of these are correct |
|
liver |
|
small 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.