| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
Which of the following is not a method of heat transfer?
conduction |
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reflection |
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convection |
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radiation |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.
A person's genotype is their genetic makeup and includes:
dominant alleles |
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phenotypes |
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recessive alleles |
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both dominant and recessive alleles |
A person's genotype is their genetic makeup and includes both dominant and recessive alleles. Phenotype is how the genes express themselves in physical characteristics.
The universal recipient blood type can recieve any other blood type. Which blood type is the universal recipient?
AB |
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AB-positive |
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O |
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O-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.
Which of the following is the formula for power?
\(P = \vec{w}t\) |
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\(P = w t\) |
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\(P = {w \over t}\) |
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\(P = {\vec{w} \over t}\) |
Power is the rate at which work is performed or work per unit time: \(P = {w \over t}\) and is measured in watts (W).
Which of these layers is found directly below the Earth's crust?
outer core |
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inner core |
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mantle |
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continents |
The crust is the Earth's outermost layer and is divided into oceanic and continental types. Oceanic crust is 3 miles (5 km) to 6 miles (10 km) thick and is composed primarily of denser rock. Continental crust is 20 to 30 miles (30 to 50 km) thick and composed primarily of less dense rock. The crust makes up approximately one percent of the Earth's total volume.