| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
Force is measured in newtons (N) with 1 N being the force required to impart an acceleration of:
1 mph to a mass of 1 kg |
|
1 m/s2 to a mass of 1 kg/s2 |
|
1 m/s to a mass of 1 kg |
|
1 m/s2 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.
Vector quantities are fully described by which of the following?
a direction and a polarity |
|
a magnitude only |
|
a direction only |
|
a magnitude and a direction |
Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: \(\vec{v}\)
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
salt |
|
minerals |
|
fats |
|
water |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.
The two heart chambers that collect blood are called:
ventricles |
|
atria |
|
valves |
|
aorta |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.
I biome is made up of naturally occurring flora and fauna. Fauna is which of the following?
animals |
|
plants |
|
habitats |
|
minerals |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).