| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Which of blood component fights infection?
red blood cells |
|
white blood cells |
|
plasma |
|
platelets |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.
Water coming to a boil on a stove, ice melting, and steam from a cup of coffee are all examples of which of the following?
conduction |
|
reflection |
|
radiation |
|
convection |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
cerebellum |
|
brainstem |
|
cerebrum |
|
medulla |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
What kind of weather front is likely to create clouds and storms?
temperate front |
|
cold front |
|
stationary front |
|
warm front |
A warm front is the boundary between warm and cool (or cold) air when the warm air is replacing the cold air. Warm air at the surface pushes above the cool air mass creating clouds and storms.
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/s to a mass of 1 kg |
|
1 m/s2 to a mass of 1 kg/s2 |
|
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.