| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
In the metric system, what prefix represents 103?
milli |
|
mega |
|
kilo |
|
centi |
Kilo is the metric system prefix for 103.
Work is measured in:
watts |
|
horsepower |
|
joules or newton-meters |
|
amps |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meters (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
Which of the following describes the Earth's outer core?
makes up most of the Earth's volume |
|
liquid |
|
solid |
|
primarily solid |
The Earth's core is divided into the liquid outer core (1,430 miles or 2,300 km radius) and the solid inner core (745 miles or 1,200 km radius).
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
fats |
|
salt |
|
water |
|
minerals |
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 gravitational interaction of Earth and the Moon is responsible for which of these?
day and night cycle |
|
tides |
|
the northern lights |
|
seasons |
Tides are caused by the gravitational interaction of Earth and the Moon.