| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.62 |
| Score | 0% | 72% |
Water freezing or boiling is an example of which of the following?
phase transition |
|
heating |
|
sublimation |
|
cooling |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
The heat from the Sun traveling to Earth is an example of which of the following?
conduction |
|
convection |
|
radiation |
|
electricity |
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.
The gravitational interaction of Earth and the Moon is responsible for which of these?
the northern lights |
|
tides |
|
day and night cycle |
|
seasons |
Tides are caused by the gravitational interaction of Earth and the Moon.
Someone who has Rh-factor __________ blood cannot receive blood with a __________ type.
antigen, negative |
|
negative, positive |
|
positive, antigen |
|
positive, negative |
Blood transfer is limited by the type and Rh factor of the blood. Someone who has Rh-factor negative blood cannot receive blood with a positive type but a person with Rh-factor positive type blood can receive Rh-negative blood. Type O negative blood is the universal donor because it can be given to a person with any blood type. Type AB positive is the universal recipient meaning someone with this blood type can receive any other type of blood.
Most digestion takes place where?
small intestine |
|
large intestine |
|
mouth |
|
stomach |
The small intestine is where most digestion takes place. As food travels along the small intestine it gets broken down completely by enzymes secreted from the walls. These enzymes are produced in the small intestine as well as in the pancreas and liver. After the enzymes break down the food, the resulting substances are then absorbed into the blood via capillaries in the small intestine walls.