| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
Which of the following is sedimentary rock?
slate |
|
sandstone |
|
basalt |
|
obsidian |
The Earth's rocks fall into three categories based on how they're formed. Igneous rock (granite, basalt, obsidian) is formed from the hardening of molten rock (lava), sedimentary rock (shale, sandstone, coal) is formed by the gradual despositing and cementing of rock and other debris, and metamorphic rock (marble, slate, quartzite) which is formed when existing rock is altered though pressure, temperature, or chemical processes.
A subatomic particle found in the nucleus of an atom. It carries no electric charge. This desribes which of the following?
atom |
|
electron |
|
proton |
|
neutron |
A neutron is a subatomic particle found in the nucleus of an atom. It is neutral as it carries no electric charge.
Convert -20C° to F°.
-4 |
|
36 |
|
78 |
|
-36 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(-20) + 32\)
\(F° = {-180 \over 5} + 32\)
\(F° = -36 + 32 = -4\)
__________ is caused by a lack of Vitamin C.
shingles |
|
scurvy |
|
diabetes |
|
anemia |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Velocity is the rate at which an object changes position. What is the formula for velocity?
none of these |
|
\(\vec{v} = \vec{d}t \) |
|
\(\vec{v} = { t \over \vec{d} } \) |
|
\(\vec{v} = { \vec{d} \over t } \) |
Velocity is the rate at which an object changes position. Rate is measured in time and position is measured in displacement so the formula for velocity becomes \(\vec{v} = { \vec{d} \over t } \)