Hard materials such as brick walls tend to block sound waves while soft materials such as a thick carpet tend to absorb sound waves.
What are sound waves?A sound wave is defined as the pattern of disturbance which is caused by the movement of energy traveling through a medium as it propagates away from the source of the sound.
Sound waves are created by object's vibrations and produce pressure waves, for example, a ringing cellphone. The pressure wave disturbs the particles present in the surrounding medium, and those particles disturb others present next to them, and so on.
The pattern of the disturbance creates outward movement in a wave pattern, like sea water in the ocean. The wave carries the sound energy through the medium, usually in all directions and less intensely as it moves farther from the source.
Learn more about sound waves,here:
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PLEASE HELP NO LINKS OR WEBSITES IF YOU DONT KNOW LEAVE ME ALONE THANKS THIS IS DUE IN 30 MINUTES
i will give brainliest to correct answer - no links
Answer:
C - 23cm
Explanation:
Answer:
23
Explanation:
cuz si senor.
NEED LIKE RIGHT NOW ASAP (NO LINKS PLEASE) THANK YOU
what is a wave and how it transverses energy
Answer:
wave means a number of different ways in which energy is transferred: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields.
Explanation:
Please tell me witch one goes with what. It can be continental drift or plate tectonics. please tell me if you need help
1.Identify evidence that supports the theories of continental drift and plate tectonics.
2. Glossopteris plant found in several southern hemisphere continents.
3.The same rocks are found on either side of the Atlantic Ocean.
4.There are no ocean floor rocks older than 180 million years. The pattern of rock ages 5. shows new rock forming at mid-ocean ridges and spreading away from the ridge in both directions.
6. The shapes of South America and Africa appear to fit together.
7. The majority of earthquakes and volcanoes occur along easily recognized bands called tectonic plate boundaries.
8. Lystrosaurus reptile fossils are found on several Southern Hemisphere continents.
9. The same type of sediment deposits are found in several southern continents.
10. Magnetism in rocks of different ages don't point to the same North Pole locations.
Plants carry on two complementary processes, photosynthesis and respiration. How do the two processes differ?
Photosynthesis creates sugar, and respiration breaks sugar down.
Photosynthesis requires oxygen, and respiration requires carbon dioxide.
Photosynthesis takes place only during the day, and respiration takes place only at night.
Photosynthesis takes place in all plant cells, and respiration takes place only in leaf cells.
the table lists the speed of the light in four different materials at the temperature.
Answer:
1
Explanation:
light would travel the farthest in air
What happens to a sheet of copper as the average kinetic energy of the copper molecules decreases?
It melts.
It expands.
It gets cooler.
It gains energy.
Answer:
It gets cooler.Explanation:
Hopes this helps. Mark as brainlest plz!Answer:
it gets cooler
Explanation:
i took the test and got it correct
Which materials are needed for photosynthesis?
carbon dioxide and water
oxygen and carbon dioxide
sugar and oxygen
water and sugar
Which statement describes the roles of photosynthesis and respiration in the oxygen cycle?
Photosynthesis and respiration both put oxygen into the atmosphere.
Photosynthesis removes oxygen from the atmosphere, and respiration puts oxygen into the atmosphere.
Respiration and photosynthesis both remove oxygen from the atmosphere.
Respiration removes oxygen from the atmosphere, and photosynthesis puts oxygen into the atmosphere.
Respiration removes oxygen from the atmosphere, and photosynthesis puts oxygen into the atmosphere.
HI HELP ONLY DO THE 2nd ONE!
Practice It!
NASA believes that technology drives exploration. This means that advancements in technology lead to advancements in space exploration. Over the past 60 years, we have developed technology to leave Earth's surface, orbit the planet, reach the Moon, take exceptional pictures of celestial objects, and complete remote fly-by's of outer planets. In the future, technology could lead us to visiting other planets, live and work in deep-space, or even leaving our own galaxy.
Select the statement(s) that illustrate why developing space technology is important.
Technology in space helps us in our everyday lives here on Earth.
Space exploration technology has helped us explore the Moon and see images of far off galaxies.
Technology allows us to better understand our world so that we can make it better.
Technology only helps scientists while they are doing experiments.
Space technology may help us inhabit another planet or live in space in the future.
please answer ill give brainliest
Answer:
Explanation:
Space exploration technology has helped us explore the Moon and see images of far off galaxies.
Space technology may help us inhabit another planet or live in space in the future.
These are the correct statements
answer quick pls its timed
What is the role of the green substance chlorophyll in photosynthesis? (2 points)
a
Chlorophyll collects water from the ground.
b
Chlorophyll captures energy from the sun.
c
Chlorophyll captures carbon dioxide from the air.
d
Chlorophyll moves water up the stem to the leaves.
Answer:
Its job is to store light
Explanation:
Green plants have the ability to make their own food. They do this through a process called photosynthesis, which uses a green pigment called chlorophyll. ... Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules.
Answer:
B. Chlorophyll captures energy from the sun
Explanation:
It's not A, because that's what roots do
It's not C, because that's what stomata do
It's not D, because that's what cortex cells and xylum vessels do
Good Morning, How are you here is my question but it is going to be ina screenshot here it is...
Answer: c
Explanation: longer faults make bigger earthquakes.
What do the number of protons determine for an element? (PLEASE HELP ME THIS IS TIMED!!!! PLEASE HELP!!!!!)
Answer:
all of the above
Explanation:
Hi! I believe I have the answer.
My answers: B, D
Please let me know if it is wrong. Good luck!
This chart shows the effect of several solutions on litmus paper. Which solutions are most likely bases? (PLEASE HELP!!! THIS IS TIMED!!!!!)
A.Solutions 4 and 7
B.Solutions 2 and 5
C.Solutions 1 and 3
D.Solutions 3 and 6
Answer: C
Explanation:
Im not sure tho
12a. How does the model of the volcano provide evidence for the cycling of Earth materials through the rock cycle?
12b. Explain how the process you described in 12a results in rock formation.
Answer:
lava is coming from the crust
Explanation:
volcano's explode with lava because the crust pushes it out
Complete the following sentence.
Scientists who study the relationship between parasites and hosts are called
Answer:
Parasitologists
Explanation:
20 Points and Brainliest IF CORRECT
A student is given a mineral that she can’t identify. Explain how the techniques Sandra used in the investigation can help the student identify the mineral.
Which substances are the products of photosynthesis?
oxygen and water
glucose and oxygen
glucose and carbon dioxide
oxygen and carbon dioxide
Answer:
oxygen and carbon dioxide...
Which substances are the products of photosynthesis?
[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Answer⤵}}}}}∘[/tex]
[tex]\sf\purple{Glucose\: and \:oxygen}[/tex]. ✔.........................................................
More:-❀ Photosynthesis is a process by which phototrophs convert light energy into chemical energy.
❀ The word “photosynthesis” is derîved from the Greek words "phos" (which means “light”) and "σύνθ-εóîς" (which means “combining together.”) And so it means “combining together with the help of light.”
❀ The process of photosynthesis occurs in green plants (the primary producers in a food chain) and a few other autotrophic organisms such as cyanobacteria, purple bacteria and green sulfur bacteria.
❀ Following is the photosynthesis formula:
☞︎︎︎ 6 CO2 + 6 H2O —> C6 H12 O6 ([tex]\sf\blue{glucose}[/tex]) + 6 O2 ( [tex]\sf\pink{oxygen}[/tex]).
........................................................
[tex]\bold{ \green{ \star{ \orange{Hope\:it\:helps.}}}}⋆[/tex]
help me ill give you brainilest
(easy answer I'm in 5th grade T_T)
Bob thinks that plants get their materials for growth from the soil. Write a couple of sentences to explain why is Bob incorrect. (2 points)
Answer: Plants get there nutrients from not only the soil but from the sun as well. The sun provides the plants with food/energy. The plants take in the sun light and turn it into glucose, glucose is used by plants to give them energy.
Explanation:
how is metal alloy a solution?
Answer:
Unlike pure metals, most alloys do not have a single melting point; rather, they have a melting range in which the substance is a mixture of solid and liquid.
Explanation:
What could be the cause for the large temperature difference in Atlanta and St. Louis? A. A cold front moving southeast
B. A warm front moving southeast
C. High pressure in Atlanta
D. Low pressure in Atlanta
can you pls answer this quickly i dont have time and i dont get it
Answer: The Shape of Molecules
The three dimensional shape or configuration of a molecule is an important characteristic. This shape is dependent on the preferred spatial orientation of covalent bonds to atoms having two or more bonding partners. Three dimensional configurations are best viewed with the aid of models. In order to represent such configurations on a two-dimensional surface (paper, blackboard or screen), we often use perspective drawings in which the direction of a bond is specified by the line connecting the bonded atoms. In most cases the focus of configuration is a carbon atom so the lines specifying bond directions will originate there. As defined in the diagram on the right, a simple straight line represents a bond lying approximately in the surface plane. The two bonds to substituents A in the structure on the left are of this kind. A wedge shaped bond is directed in front of this plane (thick end toward the viewer), as shown by the bond to substituent B; and a hatched bond is directed in back of the plane (away from the viewer), as shown by the bond to substituent D. Some texts and other sources may use a dashed bond in the same manner as we have defined the hatched bond, but this can be confusing because the dashed bond is often used to represent a partial bond (i.e. a covalent bond that is partially formed or partially broken). The following examples make use of this notation, and also illustrate the importance of including non-bonding valence shell electron pairs (colored blue) when viewing such configurations .
Methane Ammonia Water
Bonding configurations are readily predicted by valence-shell electron-pair repulsion theory, commonly referred to as VSEPR in most introductory chemistry texts. This simple model is based on the fact that electrons repel each other, and that it is reasonable to expect that the bonds and non-bonding valence electron pairs associated with a given atom will prefer to be as far apart as possible. The bonding configurations of carbon are easy to remember, since there are only three categories.
Explanation:
he diagram shows changes of state between solid, liquid, and gas. The atoms of a substance lose energy during a change of state. Before the change, the atoms are close together but are able to slide past one another.
A diagram has a triangle at center with gas on top, liquid on bottom right, solid on bottom left. An arrow from gas to liquid is labeled O, and an arrow from liquid to gas is labeled N. An arrow from solid to liquid is labeled P, and an arrow from liquid to solid is labeled Q. An arrow from solid to gas is labeled L, and an arrow from gas to solid is labeled M.
Which arrow represents the change of state described above?
M
N
P
Q
Answer:
The correct answer is P
Explanation:
FREE BRAINLIEST IF CORRECT
Bats and marine mammals are able to locate prey and to communicate by sending and receiving soundwaves that echo off of surfaces. Echoes demonstrate the wave property of?
Answer:
Reflection.
Explanation:
An echo is an example of wave reflection. Reflection occurs when waves bounce back from a surface they cannot pass through.
Hope this helps
Which structures help plants control the rate of transpiration to prevent withering and eventual death?
chloroplasts and pores
chloroplasts and guard cells
guard cells and stomata
stomata and pores
Answer:
C - guard cells and stomata
Explanation:
Can somebody please match the numbers?
Answer:
1. volcano
4. glaciers
Explanation:
this isnt really helpful but there is 2 sorryy
Answer:
9 is to earthquakes.
Explanation:
Brainliest if correct LINKS WILL BE REPORTED
Answer:
1.transparent
2.able to pass through
Explanation:
The data shows that recently the size of the raccoon population decreased. How will the decrease in the raccoon population affect the other populations? Be sure to explain whether the owl population, the duck population, and the frog population will change, and why. PLEASE HELP (science by the way!!!)
Answer:
Some will loose their pray it being the racoons and they will too die because thy lost their food source.
Explanation:
i will give brainliest to correct answer - link = report
C. 23 cm is the answer.
....