Can anyone help me with my homework? It's a practice test for science, but I'm not quite sure I'll do good.
1. Which phrase best describes wavelength?
A. The number of times a wave repeats
B. The time it takes for a wave to repeat
C. The distance between wave crests
D. The distance a wave is from the starting point
2. What do all the waves have in common?
A. they can move through space
B. they can shake structures
C. they carry and transfer energy
D. they need a medium to travel in
3. Students model a wave by moving the end of a rope up and down. Which statement best explains the type of wave created by this motion?
A. a longitudinal wave, where particles move in the same direction as the wave.
B. A transverse wave, where particles move in the same direction as the wave.
C. A longitudinal wave, where particles move perpendicular to the wave.
D. A transverse wave, where particles move perpendicular to the wave.
4. and explosion takes place in space. Which type of waves from the explosion can be observed on earth?
A. both sound waves and light waves
B. neither sound waves nor light waves
C. light waves, but not sound waves
D. sound waves, but not light waves
5. which option is an example of reflection?
A. an echo of sound in the canyon
B. light shining through a window
C. a rock making ripples in water
D. the sound of a siren changing
6. which type of surface is best for absorbing sound waves?
A. foam
B. rock
C. glass
D. plastic
7. which type of wave can only be transmitted through matter?
A. ultraviolet
B. light
C. infrared
D. sound
8. which statement correctly describes the relationship between wavelength, frequency, and energy?
A. waves with a short wavelength have a low frequency and high energy.
B. waves with a short wavelength have a high frequency and low energy.
C. waves with a short wavelength have a low frequency and low energy.
D. waves with a short wavelength have a high frequency and high energy.
9. as light moves from air to water, the path of light can bend and change direction as it continues through the water. What is the name of this phenomenon?
A. refraction
B. transmission
C. absorption
D. reflection
10. which kind of signal does a cell phone use to send a picture through a text message?
A. an analog signal, which is able to travel large distances.
B. an analog signal, which can easily be in coded and decoded.
C. a digital signal, which prevents images from being pixelated.
D. a digital signal, which is in less likely to degrade
In words here you go
1. Pulling one end of a spring and releasing it.
2. They calculate the difference in times between the arrival of different waves to determine the distance to the epicenter.
3.scientists dramatically increased the number of seismographs monitoring the volcanoes activity to warn people to evacuate the area.
4.category 2
5.a tropical storm.
6.a simulation
7."moderate to heavy rain expected"
8.strong winds
9.careless actions with campfires.
10.vegetation becomes dry and can catch fire more easily.
I promise these are right.
Sorry for Anonymous rude response. I do not know the answers, but when I get them, I will post them here.
I do connexus: "when I get them, I will post them here"
Well, did you get 0 right and don't know the answers?
I just lost so many braincells
1. A
2. B
3. D
4. C
5. C
6. B
7. D
8. B
9. D
10. B
I got a 100%. All real answers for whoever needs them. Good luck to yall!