Does a tree falling over in a forest make a sound if there is no receptor (human or animal ear) to hear it? In your answer, describe why you think it does or does not. Describe how you would test your hypothesis. Use relevant terms.

Yes. A tree falling over in a forest makes a sound even there is no receptor (human or animal ear) to hear it.

In terms of physics, sound is a vibration that travels through a transmission medium like a gas, liquid, or solid as an acoustic wave. Sound is the reception of these waves and the brain's perception of them in terms of human physiology and psychology. Only acoustic waves with frequencies between roughly 20 Hz and 20 kHz, or the audio frequency range, can cause a human to have an auditory sensation.

If sound is defined as air vibrations, then the falling tree most definitely creates sound because it causes air vibrations. A recorder with a microphone could undoubtedly capture those vibrations as sound even if no one or any other animal was around to hear it.

Learn more about sound here:

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if you dig a hole through the earth, from one hemisphere to the other, and drop a tennis ball into it, would it get stuck at the center, since thats where gravity's at, or would it pop up out the other side??

According to the graph, how many light-colored moths existed in year 2?

Mike created the following table for the layers of the Earth. What needs to be corrected?

The mantle is made of metal and the outer core is made of rock.
The outer core is liquid and the inner core is solid.
The crust is 2,900 km and the mantle averages 45 km.
The crust is semi-solid and the mantle is solid.

struggling on this, really need help

Need help asap
Jarvis is going canoeing for the first time. His Dad told him about his scary adventure as a boy when his canoe tipped over. How can Jarvis avoid the same experience?

Keep his weight back while leaning into the turn
Remain seated when the canoe is in motion
Stow all supplies in the back of the canoe
Use two paddles to increase the speed of the canoe

Which observation indicates a chemical property?


slowly dissolves


turns cloudy


turns black


gritty

Please answer this question fast

In this dark-colored forest, you started with 50% light moths and 50% dark moths. At the end of your simulation, was there a higher percentage of light or dark moths?

Producer: (plants) (produces its own food) 1. The common name of my organism is: ______________

2. This producer gets energy from sunlight which allows the plant to make _____________ which the cells use later for energy in cellular respiration at night.​

Taylor created the following table to compare the three types of rocks. What correction needs to be made to the information in the table?

Examples of igneous rock are sandstone and limestone and examples of sedimentary rock are granite and basalt.

Examples of igneous rock are granite and marble and examples of metamorphic rock and basalt and gneiss.

Metamorphic rocks are made from the cooling and hardening of sediment and igneous rock is made from high heat and pressure causing chemical change.

Igneous rocks are the cooling and hardening of magma or lava and sedimentary rock is made of sediment cemented together.

Study the roller coaster diagram. Match the labels to the correct location on the roller coaster.

A:
B:
C:
D:

- Greatest Potential Energy
- Greatest Kinetic Energy
- Increasing Kinetic Energy
- Increasing Potential Energy

ME Project- Decomposer
Decomposer: (breaks down dead matter)
17. The common name of my organism is:​

Study the following image of the moving car.

At the top of the hill, the car’s potential energy is ______ and kinetic energy is ______.

- High
- Low
- Equal

look at the diagram of the bicycle chain and the cogs above. Explain in detail why you exert a force on the pedals, but you still obey the law of conservation of energy.

Compare an Earth year to a cosmic year. How many Earth years are in one cosmic year? What makes it that much longer?

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pls hurry its a exam!

Describe all the ways that Newton’s Laws can apply in the game of football (Remember to talk about ALL THREE LAWS).

no links please ! :(

•Accordingto the graph, how many dark-colored moths existed in year 8?

Explain each of Newton’s three laws :

a. Law of Inertia
b. Law of Force and Acceleration
c. Law of Action/Reaction

no links please !

Plate Tectonics Lab Report The outcome variable (dependent variable): the outcome/dependant variable is Test variable (independent variable): the test/independent variable is

In this light-colored forest, you started with 50% light moths and 50% dark moths. At the end of your simulation, was there a higher percentage of light or dark moths?

Using the knowledge you have about electricity, what invention would you create to provide electricity for those third world countries who need it? Post a picture of your invention listing the significance. If you have a country specifically in mind this could help please list that country, as well.

Draw a diagram that shows how Mark and Gina can model the positions of the Sun, Earth, and the Moon, and their orbital paths, during a solar eclipse. You must use all of the tools in your design: lamp, tennis ball, golf ball, and yarn.

What trait (dark or light moth) is an advantageous trait in the light forest?