| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
Poor balance could indicate an issue with which part of the nervous system?
medulla |
|
cerebellum |
|
spinal cord |
|
cerebrum |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
potential |
|
inherent |
|
kinetic |
|
gravitational |
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.
Elements in the same group in the Periodic Table of the Elements have the same:
number of atomic mass units |
|
number of electrons |
|
number of electron shells |
|
number of electrons in their outer electron shell |
The columns of the Periodic Table are called groups and all elements in a group have the same number of electrons in their outer electron shell. The group that an element occupies generally determines its chemical properties as the number of outer shell electrons establishes the way it reacts with other elements to form molecules. So, because each element has the same number of electrons in its outer shell, each has similar reactivity.
A subatomic particle found in the nucleus of an atom. It carries no electric charge. This desribes which of the following?
atom |
|
proton |
|
electron |
|
neutron |
A neutron is a subatomic particle found in the nucleus of an atom. It is neutral as it carries no electric charge.
The gravitational interaction of Earth and the Moon is responsible for which of these?
seasons |
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day and night cycle |
|
tides |
|
the northern lights |
Tides are caused by the gravitational interaction of Earth and the Moon.