Answer:
True
Explanation:
Sound waves require a medium/substance to transmit through, for example, sound waves cannot travel through the vacuum of space . The medium, water or air, itself does not move in bulk with the wave . The medium's particles carry kinetic energy from one point to another . This is when the wave transmits through its medium, the particles simply vibrate as the wave passes through. The vibrations carry the energy from one particle to the next. This means that the sound wave is carried through the medium.
*Note: Sound waves need particles to travel but light does not.
Read the following passage:
Wind and water carry sand, debris, and small pieces of rocks and deposit them in layers. These layers pile up and after many years form a single rock called Rock A. The movement of tectonic plates buries Rock A deep inside Earth. Heat and pressure change the mineral composition of Rock A and transform it into Rock B. Rock B comes out to the surface of Earth due to plate movements.
Which type of rock has been formed?
Group of answer choices
metamorphic
sendimentary
igneous
fossils
Answer: I think that it is either B or D
Why might hydrogen be a wonderful fuel for the future?
Answer:
In the future, hydrogen will join electricity as an important energy carrier, since it can be made safely from renewable energy sources and is virtually non-polluting. It will also be used as a fuel for 'zero-emissions' vehicles, to heat homes and offices, to produce electricity, and to fuel aircraft.
Answer:
It can be a wonderful fuel, because unlike other sources of power generation, it produces no greenhouse gas and hence does not contribute in polluting the environment or causing global warming. However it can be a dangerous fuel as well, as it is highly flammable.
can anyone help me with this ( no links )
10 points please help
No links What lives in the Arctic tundra biome? Choose all that apply
Reptiles, amphibians,lots of insects, reindeer, caribou, muskox
Answer:
Muskox reindeer and caribou
please help no trolls or links pls
What are some differences in the design of wheelchairs for racing vs rugby?
Answer:
-a shorter seat, without hardest or armrest to allow ease of movement
-adapted tires
-inclined wheels
-a reinforced frame
-a reclining seat
is vineasel edible??????????????????????/
Answer:
no it's not edible
The functions of two physical structures of plants are described below: (2 points)
Structure 1: Holds the leaves of the plant toward the light.
Structure 2: Helps reduce water loss.
What statement is true about the functions?
a
Structure 1 is the stamen and Structure 2 is the pistil.
b
Structure 1 is the stem and Structure is the waxy covering.
c
Structure 1 is the pistil and Structure 2 is the fuzzy hair.
d
Structure 1 is the waxy covering and Structure 2 is the stamen.
The rainforest contains what v percentage of all of the species in the world
25%
50%
75%
10%
Answer:
50%
Explanation:
Please let me know if its right.
MULTIPLE CHOICE QUESTION + DIAGRAM IN PICTURE
CORRECT ANSWER = BRAINLIEST
Answer:
B!
Explanation:
None of the other answers work with the chart correctly :)
What adoptions do trees have in the rainforest
Deep roots and spread their roots out over a great distance
Deep roots that do not spread out over a great distance
Short roots and spread out over a great distance
Short roots that do not spread over a great distance
Please help this is due today!
Military submarines incorporate multiple technologies in order to remain silent and undetected in the water. Submarine crews are cautioned not to make loud sounds or drop tools or equipment to avoid detection. Use what you have learned about the factors that affect sound transmission to explain why submarines have to be careful not to make sounds while other military craft, such as airplanes or tanks, don't have to worry about the sounds they make? Use evidence and scientific reasoning to support your response.
Answer:
Explanation:Military submarines are designed to roam the oceans undetected by enemies or spies. They rarely surface, except to establish radio contact or perform data communication with their respective headquarters. Otherwise, their job is to be as silent as possible.
Answer
Sorry if this is incorrect, but I think the reason submarines have to stay quiet is because they want to evade discovery by passive sonar.
Explanation:
My explanation is because passive sonar detects acoustic signals and sounds which are detected because sound travels faster in water compared to air.
Hope this helps!
please help no trolls no links pls
How does changing the mass of a wheelchair affect its velocity?
Explanation:
Mass and velocity are inversely propotional, which means that if you increase the mass of the wheelchair the velocity would automatically decrease, similarly, if you decrease the mass of the wheelchair the velocity of the wheelchair would increase.
Hope that helps...
No links The soil rainforest are______
nutrient rich
Nutrient poor soil
Mediocre
Rich in clay
i will give brainly to correct answer (if you dont get brainly lmk if you want me to make a fr33 p01nts post so i can give you it)
Answer:
The stoma allows the intake of oxygen gas in photosynthesis and releases oxygen gas in respiration.
Explanation:
Through photosynthesis, leaves turn light energy into food. Through pores, or stomata, leaves “breathe” in carbon dioxide and “breathe” out oxygen. Leaves also release excess water, much like we sweat.
The reproductive organs of the male
The reproductive organs of the female are the
The ovaries produce the
The testes produce the
Word Bank
ovaries, testes, sperm, eggs
Answer:The reproductive organs of the male: Testes
The reproductive organs of the female are the: ovaries
The ovaries produce the: Eggs
The testes produce the: Sperm
Help No links Temperate grasslands are a division of a larger biome grouping of v grasslands that includes Tropical
Tropical savannas
Desert
Temperature grasslands
Tropical rainforest
Answer:
tropical Savannas. hope helpful answer
After reading this answer the question:
Why might hydrogen be a wonderful fuel for the future?
Explanation:
hydrogen will join electricity as an important energy carrier since it can be made safely from renewable energy sources and is virtually non-polluting
Can I get some help plzz
Answer:
It's row in the table
Explanation:
It is the number of electrons at the outermost shell of an electron eg. The valence electron of sodium is one.
Help Please. It's On Erosion. 15 Points
NO LINKS RIGHT ANSWERS ONLY!!!!!!!
-----------Refers to the soil that is frozen solid all year round does not even melt in the summer.
Frost
Glaze
Permafrost
Verglas
The answer is "permafrost". Permafrost is soil/ground that stays frozen year-round.
The forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric _____.
The forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric field.
The forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric field.
The force exerted on an electric charge at any given distance is determined by applying coulomb's law as shown below;
[tex]F = \frac{kQ^2}{r^2}[/tex]
The electric field strength of the charge is given as;
[tex]E = \frac{F}{Q}[/tex]
F = EQ
where;
E is the electric field Q is the electric chargeThus, we can conclude that the forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric field.
Learn more here:https://brainly.com/question/14270204
NO LINKS RIGHT ANSWERS ONLY!!!!
How do waves form?
A. Ocean waves form as wind is absent
B. Ocean waves form as wind moves across the surface transferring it's energy to the water
C. Ocean waves form as salinity increases
D. Ocean waves don't form
No links right answers only!! 9recipitation like in the Arctic tundra.
A. In the summer, it typically rains less van 5 cm (2 inches) while in Winter it rains 25-44cm ( 10 -17 inches)
B. The range is form 15-25cm (6-10 inches) a year where most falls as snow
C. There is an average of 20-35 inches of rainfall a year
D. It can also be called a cold desert due too its lack of precipitation
Answer:
B . the range is from 15-25 cm(6-10 inches) a year where most falls as snow
BRAINLIESIT IF CORRECT
4
Answer:
the answer is vacum of space
Answer:
1. a medium
2.longitudinal
Humidity refers to the moisture in the air or the amount of water vapor found in the air and it is very high and rainforest around 80%
true or false
Where is the ozone layer located (which layer of the atmosphere
It is located in the Stratosphere.
Answer: in stratosphere
Which compound would not neutralize hydrochloric acid?
A. Sodium Hydroxide
B. Sodium Carbonate
C. Sodium Chloride
D. Sodium oxide
Answer:
its B
Explanation:
A chemist performs the same tests on two white solids, A and B. The results are shown in the table below.
image
Which result identifies the substances, A and B, correctly?
The melting point of a substance is characteristics to it. Hence, we can identify a compound by calculating its melting point. If the solids are pure they will give their characteristic actual melting point.
What is melting point?Melting point of a substance is the temperature at which it converts from solid state to liquid state where, the two phases are in equilibrium. Melting point is dependent upon the intermolecular forces, molar mass, temperature and presence of impurities.
Melting point of a pure substance is a characteristic feature for it. Hence, we can qualitatively test a compound using its melting point and using standard dats of melting points we can identify the substance.
Conductivity, solubility etc. are not characteristic for a substance and can be similar to other solids. Therefore, option A melting point tests helps to identify A and B.
Find more on melting point:
https://brainly.com/question/29578567
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BRAINLIESIT IF CORRECT
3