| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
Which of the following states of matter exists at the lowest temperature?
solid |
|
gas |
|
none of these |
|
liquid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
-40°F is how many °C?
-40 |
|
-8 |
|
\({40 \over 9}\) |
|
\(-{40 \over 9}\) |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)
Gametes have how many pairs of chromosomes?
2 |
|
4 |
|
23 |
|
46 |
Reproductive (haploid) cells known as gametes have half as many (23) pairs of chromosomes as normal (diploid) cells. When the male gamete (sperm) combines with the female gamete (ovum) through meiosis to form a zygote, each gamete supplies half the chromosomes needed to form the normal diploid cells.
What part of the brain is responsible for for balance, movement, and muscle coordination?
medulla |
|
brainstem |
|
cerebrum |
|
cerebellum |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
Changes to an object's speed or direction of motion are caused by which of the following?
a force |
|
power |
|
work |
|
kinetic energy |
Force is applied to change an object's speed or direction of motion.