## Which wave, a or b, has lower energy?

Energy, which is a measure of one’s ability to function, comes in a variety of forms and can change from one to the next. Batteries and water behind a dam are examples of stored or future electricity. Kinetic energy is represented by moving objects. When charged particles, such as electrons and protons, pass, they generate electromagnetic fields, which transport the form of energy known as electromagnetic radiation, or light.
Energy is transported throughout the world around us in two ways: mechanical waves and electromagnetic waves. Mechanical waves include water waves and sound waves in the air. A disturbance or vibration in matter, whether solid, gaseous, liquid, or plasma, causes mechanical waves. A medium is the material through which waves pass. Vibrations in a liquid produce water waves, whereas vibrations in a gas produce sound waves (air). These mechanical waves move through a medium by causing molecules to collide, passing energy from one to the next like dropping dominoes. Since there is no means to relay these mechanical waves in space, sound waves are unable to fly.

## Which answer choice provides the best set of labels for wave a and wave b?

Electromagnetic waves are a form of energy that travels through the universe but cannot be seen. Some of the effects of this force, however, can be “seen.” The electromagnetic spectrum includes the light that our eyes can see.
From reds and oranges to blues and purples, this visible portion of the electromagnetic spectrum contains the colors we see in a rainbow. Each of these colors corresponds to a specific wavelength of light.
Waves that we cannot see produce the sound we hear. Sound waves need a medium to pass through in order to transfer from one location to another. Since air is made up of molecules, sound may pass through it.
These molecules bear sound waves by colliding with one another, just like dominoes colliding. Even water can transmit sound because it is made up of molecules. Since there are no molecules in space to transmit sound waves, there is no sound.
Electromagnetic waves differ from sound waves in that they do not pass across molecules. Electromagnetic waves can pass through air, solid objects, and even space in this way. This is how astronauts on spacewalks interact using radios. Electromagnetic waves include radio waves.

### Which is the unique property of light within the group of electromagnetic waves

dependable). Alternatively, it could simply denote a region where the mantle is so close to melting at that depth and pressure that it is “soft.” Then this indicates a weak spot in the upper mantle.
The asthenosphere, or “poor sphere,” is the name given to this field. The asthenosphere divides the uppermost mantle and crust’s hard, solid rock from the rest of the strong, solid mantle below. The lithosphere is made up of the uppermost mantle and crust above the asthenosphere. Over the thin asthenosphere, the lithosphere is free to pass (glide). The tectonic plates are lithospheric plates, not tectonic plates. 670 kilometers Discontinuity in Seismology A couple of seismic structures lie beneath the low velocity zone, probably the remains of the planetesimal’s nucleus. What Causes the Magnetic Field of the Earth? Some early theories on why the compass needle pointed north included a supernatural attraction to the polestar (North Star) or an attraction to vast masses of iron ore in the arctic. A more extreme theory proposed that the Earth, or any solid layer within it, is made of iron or other magnetic material, resulting in a permanent magnet. This theory is plagued by two major flaws. The magnetic field drifts over time, and the magnetic poles change, for starters. Second, permanent magnetism is only retained by magnetic minerals below their Curie temperature (for example, 580°C for magnetite). The majority of the Earth’s interior is hotter than all known Curie temperatures, and cooler crustal rocks simply don’t have enough magnetic material to account for the magnetic field, and crustal magnetization is still extremely heterogeneous. Another theory emerged as a result of the discovery of the liquid outer core:

### Which statement best describes how waves carry energy

Have you ever noticed how your leg appears bent as you dangle it in the water from the pool’s edge? Why do fish appear to change location dramatically when viewed from various angles in an aquarium? What is it about diamonds that makes them so dazzling?
These are all questions that can be answered using the essential principle of refraction, which describes how light bends when it enters a medium that is different from the one it has been moving through. The interface between the media is the meeting point of two separate media. Both light refraction (and reflection) takes place at the interface.
What causes light to refract or bounce at the interface? As light strikes a transparent surface, the transmitted part of the light (the portion that passes through the interface) changes direction. At the surface, another part of the light is reflected. The refracted beam switches direction at the interface, deviating from a straight continuation of the incident light ray, as shown in Figure 1.