| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.53 |
| Score | 0% | 71% |
The heat from the Sun traveling to Earth is an example of which of the following?
convection |
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radiation |
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electricity |
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conduction |
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.
The connective tissue that connects bones to other bones at joints is called:
ligaments |
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tendons |
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knuckles |
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cartilage |
Tough fibrous cords of connective tissue called tendons connect muscles to the skeleton while another type of connective tissue called ligaments connect bones to other bones at joints (elbow, knee, fingers, spinal column).
When light travels between two substances it bends. This is called:
reflection |
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refraction |
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conduction |
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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.
The four planets closest to the Sun are called terrestrial. What does terrestrial mean?
the planets are Earth-like |
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the planets have water |
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the planets have magnetic fields |
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the planets have moons |
The four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called terrestrial (Earth-like) planets because, like the Earth, they're solid with inner metal cores covered by rocky surfaces.
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
compound |
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element |
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atom |
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molecule |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.