Question 1 Magma and lava have in common that they are: Question 1 options: igne

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Question 1

Magma and lava have in common that they are:

Question 1 options:

igneous rocks.

molten rock material.

found at the surface of the Earth.

found inside the Earth.

none of the above.

Question 2

The fundamental difference between electromagnetic waves and other types of waves is that electromagnetic waves:

Question 2 options:

move more slowly than all other types of waves.

are invisible regardless of wavelength.

do not experience constructive or destructive interference.

transfer energy without transferring mass.

all have the same wavelength.

Question 3

What characteristic of waves is measured in Hertz?

Question 3 options:

amplitude

speed

frequency

length

energy

Question 4

Waves transfer energy from:

Question 4 options:

one place to another.

one wavelength to another.

one frequency to another.

one speed of wave to another.

none of the above.

Question 5

Which of the following is the same for all kinds of electromagnetic waves?

Question 5 options:

frequency

speed

energy

wavelength

transmission

Question 6

Which of the following was used as evidence for plate tectonics?

Question 6 options:

topographic profiles of the ocean floors

maps on rock magnetism

data classifying rocks by age

sea floor spreading

all of the above

Question 7

The magnetic patterns detected on the seafloor:

Question 7 options:

were created by magnetite in lava flows.

are caused by hot spots.

are indicators of past and future earthquake sites.

have no single explanation that is accepted by scientists.

are always oriented perpendicular to the equator.

Question 8

Which of the following describes earthquakes?

Question 8 options:

Earthquakes are an abrupt release of energy.

Prediction of earthquakes is an established science, which gives global citizens a chance to evacuate ahead of time.

Earthquakes have never occurred in the middle of the USA.

No earthquake has been measured higher than 7 on the Richter scale.

All earthquakes happen within one kilometer of the Earth’s surface.

Question 9

Electromagnetic waves are produced:

Question 9 options:

where there is heat and light.

when electrical charges are accelerated.

where electromagnetic waves are bent.

when positive and negative charges meet.

none of the above.

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Question 10

Divergent plate boundaries are associated with:

Question 10 options:

seafloor spreading.

formation of new crust.

volcanic action.

shallow, low-energy earthquakes.

igneous rocks.

molten rock material.

found at the surface of the Earth.

found inside the Earth.

none of the above.

Explanation / Answer

1)molten rock material.

Magma is a molten and semi-molten rock mixture found under the surface of the Earth. This mixture is usually made up of four parts: a hot liquid base called the melt; minerals crystallized by the melt; solid rocks incorporated into the melt from the surrounding confines; and dissolved gases.   

Lava is the molten rock expelled by a volcano during an eruption. The resulting structures after solidification and cooling are sometimes also described with the adjective lava. The molten rock is formed in the interior of some planets, including Earth, and some of their satellites. The source of the heat that melts the rock within the earth is geothermal energy. When first erupted from a volcanic vent, lava is a liquid usually at temperatures from 700 to 1,200 °C (1,292 to 2,192 °F).

2) can transfer energy without transferring mass.

Sound waves and electromagnetic waves are a physical manifestation of vibrations happening in the universe. These two phenomena are important in the advancement of science and technology on earth. Sound waves are vibration or pattern of disturbances caused by movement of energy traveling on a medium such as air, water or other solids. Basically, the vibrations disturb the first medium it touches and it disturbs the next to it and so on. We are able to sense the sound because the sound waves move the air molecules until it touches our eardrums. These vibrations in our ears are perceived in the brain as sound. Electromagnetic waves are transverse waves that oscillate perpendicular to the direction of the energy transfer or direction. Electromagnetic waves can travel through a vacuum, meaning it does not need a media for it to flow. Not all electromagnetic waves can pass through a certain object.

Sound waves: requires a medium
Electromagnetic waves: Don't need a medium

Sound waves: longitudinal waves
Electromagnetic waves: Transverse waves

3)frequency

4)one place to other

A is a disturbance that transfers energy from one place to another. Waves can transfer energy over a distance without moving matter the entire distance. For example, an ocean wave can travel many kilometers without the water itself moving many kilometers. The water moves up and down—a motion known as a disturbance.

5)Speed

All the different kinds of electromagnetic radiation are essentially the same "stuff" as light: they're forms of energy that travel in straight lines, at the speed of light (300,000 km or 186,000 miles per second), when electrical and magnetic vibrations wiggle from side to side. Together, we refer to these forms of energy as the electromagnetic spectrum. You can think of it as a kind of super-big spectrum that stretches either side of the smaller spectrum we can actually see (the rainbow of light colors).

6)all the above

7)were created by magnetite in lava flows.

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