| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.49 |
| Score | 0% | 70% |
Which of the following indicates the correct reproductive sequence?
zygote → ovum → fetus |
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none of these are correct |
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ovum → fetus → zygote |
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ovum → zygote → fetus |
During intercourse, the penis ejaculates sperm, produced in the testes, into the vagina. Some of the sperm makes their way to the uterus where, if they encounter an egg to fertilize, unite with the ovum to form a fertilized egg or zygote. The zygote then may implant in the uterus and eventually develop into a fetus.
When light travels between two substances it bends. This is called:
reflection |
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conduction |
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refraction |
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convection |
Because different materials have different refractive indices, light changes speed when passing from one material to another. This causes the light to bend (refraction) at an angle that depends on the change in refractive index between the materials. The greater the difference, the higher the angle of refraction.
An air mass is a large body of air that has which of the following characteristics?
similar temperature |
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similar density |
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all of these |
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similar moisture |
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.
I biome is made up of naturally occurring flora and fauna. Fauna is which of the following?
animals |
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minerals |
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plants |
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habitats |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
potential |
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kinetic |
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gravitational |
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inherent |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.