| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.59 |
| Score | 0% | 52% |
During the water cycle, water enters the atmosphere as a gas through which process?
both evaporation and transpiration |
|
evaporation |
|
precipitation |
|
transpiration |
The water (hydrologic) cycle describes the movement of water from Earth through the atmosphere and back to Earth. The cycle starts when water evaporates into a gas from bodies of water like rivers, lakes and oceans or transpirates from the leaves of plants.
Which of the following is not true about simple magnets?
opposite poles repel each other |
|
opposite poles attract each other |
|
all of these are untrue |
|
same poles repel each other |
Simple magnets have two poles, north and south, and opposite poles attract each other (N attracts S, S attracts N). Likewise, the same pole of two magnets repel (N repels N, S repels S). The Earth has a magnetic field and North and South Poles which enables the use of a magnetic compass to determine direction.
In the heart, blood flows from the right __________ to the lungs then back to the heart via the left __________.
atrium, atrium |
|
ventricle, ventricle |
|
atrium, ventricle |
|
ventricle, atrium |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
Which of these represents the path of blood flow through the heart?
left atrium → left ventricle → lungs → right atrium → right ventricle |
|
right atrium → right ventricle → lungs → left atrium → left ventricle |
|
right atrium → left ventricle → lungs → left atrium → right ventricle |
|
left atrium → right ventricle → lungs → left atrium → right ventricle |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
Which of the following is not true about mass and weight?
mass is the amount of matter something has |
|
mass depends on the location where it is measured |
|
weight depends on the location where it is measured |
|
weight is the force exerted on an object by gravity |
Mass is the amount of matter something has while weight is the force exerted on an object's mass by gravity. So, although a person's mass doesn't change when going from the Earth to the Moon, their weight will decrease because the force of the Moon's gravity is much less than that of Earth.