17. the diagram represents a balloon that is moving in one direction while escaping air is moving in the opposite direction. what causes the balloon to move?

balloon
air

ems waves
18. label the parts of the transverse wave below:

1
4
3
2

19. you measure the wavelength from ____________ to ____________.
20. you measure the amplitude from ____________ to ____________.
21. what is reflection? give an example.
22. what is refraction? give an example.
23. what is absorption? give an example.
24. what is diffraction? give an example.

Question

17. the diagram represents a balloon that is moving in one direction while escaping air is moving in the opposite direction. what causes the balloon to move?

balloon
air

ems waves
18. label the parts of the transverse wave below:

1
4
3
2

19. you measure the wavelength from ____________ to ____________.
20. you measure the amplitude from ____________ to ____________.
21. what is reflection? give an example.
22. what is refraction? give an example.
23. what is absorption? give an example.
24. what is diffraction? give an example.

Accepted Answer

### Question 17
# Brief Explanations:
The balloon moves due to Newton's Third Law (action - reaction). When air escapes from the balloon (action force), the balloon experiences an equal and opposite force (reaction force) that pushes it forward.
# Answer:
The balloon moves because of Newton's Third Law of Motion (action - reaction). The air escaping from the balloon exerts a force on the surrounding air (action), and the surrounding air exerts an equal and opposite force on the balloon (reaction), causing it to move.

### Question 18
# Brief Explanations:
1. **Label 1**: The distance between two consecutive crests (or troughs) is the wavelength. So label 1 is the wavelength.
2. **Label 2**: The lowest point of a transverse wave is the trough, so label 2 is the trough.
3. **Label 3**: The distance from the equilibrium position to a crest (or trough) is the amplitude, so label 3 is the amplitude.
4. **Label 4**: The highest point of a transverse wave is the crest, so label 4 is the crest.
# Answer:
1: Wavelength; 2: Trough; 3: Amplitude; 4: Crest

### Question 19
# Brief Explanations:
Wavelength is the distance between two consecutive corresponding points on a wave, such as from one crest to the next crest or from one trough to the next trough.
# Answer:
You measure the wavelength from crest to crest (or trough to trough).

### Question 20
# Brief Explanations:
Amplitude is the maximum displacement of a point on a wave from its equilibrium position. So it is measured from the equilibrium position (the dashed line in the wave diagram) to a crest (or trough).
# Answer:
You measure the amplitude from the equilibrium position to a crest (or trough).

### Question 21
# Brief Explanations:
Reflection is the bouncing back of a wave (or light, sound, etc.) when it hits a surface. For example, when light hits a mirror, it reflects off the mirror surface.
# Answer:
Reflection is the bouncing back of a wave (or a form of energy like light, sound) when it encounters a boundary or a surface. Example: Light reflecting off a mirror, where the light rays hit the mirror and bounce back, allowing us to see our reflection.

### Question 22
# Brief Explanations:
Refraction is the bending of a wave (usually light or sound) as it passes from one medium to another with a different optical (or acoustic) density. For example, when light passes from air into water, it bends, which is why a straw in a glass of water appears bent.
# Answer:
Refraction is the bending of a wave (such as light or sound) as it travels from one medium to another medium with a different density. Example: A straw in a glass of water appears bent because light rays from the straw bend (refract) when they pass from water to air.

### Question 23
# Brief Explanations:
Absorption is the process by which a wave (or energy) is taken in by a material, rather than being reflected or transmitted. For example, a black shirt absorbs most of the light that hits it, converting the light energy into heat energy.
# Answer:
Absorption is the process where a material takes in a wave (or energy, like light or sound) and converts it into another form of energy (usually heat). Example: A black surface absorbs most of the sunlight that falls on it, warming up as a result.

### Question 4 (assuming it's a continuation)
# Brief Explanations:
Diffraction is the spreading out of a wave as it passes through an opening or around an obstacle. For example, when sound waves pass through a door opening, they spread out into the room, allowing us to hear the sound even if we are not directly in front of the source.
# Answer:
Diffraction is the spreading out of a wave (such as light, sound, or water waves) as it passes through a narrow opening or around an obstacle. Example: Sound waves diffracting around a corner, so we can hear sounds from another room even when the door is slightly open.

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Explanation:

Question 17

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Question 18