Answer:
Convection is heat transfer due to a density differential within a fluid
Example:
The current begins when the air over the hot sand is heated and begins to rise because of its lowered density. Air from above the ocean is colder and more dense. This cooler air takes the place of the rising hot air from over the sand
The diagram shows the apparent motion of the Sun across the sky. EAST WEST Sunrise Which action causes the Sun to appear to move in this way?
A. Earth rotates from south to north.
B. Earth rotates from north to south.
C. Earth rotates from west to east.
D. Earth rotates from east to west.
If there is a solar eclipse, we see a shadow because the sunlight is _______________.
A. none of the above
B. reflected by moon
C. refracted by moon
D. absorbed by moon
Answer:
reflected by moon
SCIENCE whoever gets this first will get a brainlest
What evidence did Alfred Wegener have for his theory of continental drift?
He knew that convection occurred in the mantle and made the continents move apart.
He knew that plant and animal fossils, as well as rock layers, matched on the two continents of Africa and South America.
He explained how continents moved apart.
He had no evidence
Answer:
im not 100% sure i should be doing this but i found a website that will help a ton.
https://geo.libretexts.org/Courses/Gettysburg_College/Book%3A_An_Introduction_to_Geology_(Johnson_Affolter_Inkenbrandt_and_Mosher)/02%3A_Plate_Tectonics/2.01%3A_Alfred_Wegener%E2%80%99s_Continental_Drift_Hypothesis
i really need help on this please help me
how does evaporation happen on a stove
(dont mind the subject btw)
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Answer: Evaporation happens by heat being transferred to the pot, then the pot transfering the heat to the water, which caused the water to vibrate more, eventually turning it into water vapor, which is how evaporation happens on the stove.
Explanation:
I hope this helped!
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- Zack Slocum
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Are amplitude and wavelength related?
Answer:
they ARENT related
Explanation:
Two physical characteristics of a wave are amplitude and wavelength. ... The amplitude or height of a wave is measured from the peak to the trough. The wavelength is measured from peak to peak. Wavelength is directly related to the frequency of a given wave form.
(copy and paste)
According to the Hertzsprung-Russell diagram, a star with a relatively low luminosity and a temperature of around 20,000 K is most likely which type of star?
A. Supergiant
B. Giant
C. White dwarf
D. Main sequence star
The correct option is C. White dwarf.
The following information should be considered:
Since the star having a low luminosity and a temperature of around 20,000 K.So based on this, the star change the fixture of the name of the planet also at the same time it measures the type of star that contains less luminosity star which we called as the white dwarf.Learn more: brainly.com/question/17429689
Which of the following is the most dense?
Cold, salty water
Cold, fresh water
Warm, salty water
Warm, fresh water
How would a bar magnet orient itself to the magnetic field?
Answer:
i think the answer is A but i am not sure
Explanation:
will someone give me 2 brainleist PLZZZZZZZZ andif you do i will Give 20 ponits and i will be you friend
Gravity depends on which two factors? Select both from the list below.
Density
Mass
Shape
Volume
Distance
Answer: The correct answer is Mass and Distance
Explanation:
Consider a car moving at a constant velocity. Recall that, for any object to move at a constant velocity, the net force acting on the object must be ________.
A. Fnet = 0
B. Fnet > 0
C. Fnet < 0
For any object to move at a constant velocity, the net force acting on the object must be ZERO.
Why were the time zones established?
Answer:
The expansion of transport and communication during the 19th century created a need for a unified time-keeping system, and time zones were introduced. ... Before clocks were invented, people kept time using different instruments to observe the Sun's meridian passing at noon.
Hope it helps...
Have a great day : )
What is the best definition of luminous?
Answer:
the state of giving off light or glow.
In what way does the sun's rays of light hit the earth?
PLease anSWER
Answer:
The Sun's energy gets to the Earth through radiation, which you can prove just by standing outside and letting the sun's rays warm your face on a sunny day. Every object around you is continually radiating unless its temperature is at absolute zero, at which point its molecules completely stop moving.
Hope that helps :)
A medium-sized star in the middle of its life cycle, such as the Sun, is most likely to emit which color of light?
A red
B blue
C white
D yellow
Answer:
D Yellow
Explanation:
You can tell by looking up to the sun. Or just by searching up a picture of our sun. Also, don't look up directly at the sun! It's very dangerous for your eyes.
the defense between an earthquake's focus and its epicenter.
Answer: The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter. The epicenter is the point on the surface above the focus, the place on the surface that would receive the most intense vibrations.
Explanation: Hope it helps <3
Which statement best describes why the Milky Way is shaped a certain way?
The gravitational forces from the center of the Milky Way cause stars and solar systems to orbit around the center of the galaxy.
The gravity from the sun causes all of the other stars and solar systems to orbit it.
The Big Bang caused the Milky Way to form into the supernova we see today.
The inertia of objects in space makes them travel far distances.
Give me three inherited trait from an elephant this is for fun to get a brain list too btw ♀️
Answer:
Lol, so how about its tail? It's an inherited trait.. XDAnswers:
1. the size of their tusks (although they will grow in length with age)
2. eye colour
3. skin colour/amount of wrinkles on skin (can vary from region to region as well)
i hope this helps! :D
Same diagram... At which location would it be possible for a SOLAR ECLIPSE to happen? *
A
B
C
D
E
F
Answer:
A
Explanation:
The moon needs to be in front of the earth to cast a shadow
please help I will mark brainliest!!
Find the net force exerted on a
0.15-kg ball that has an acceleration of 20 m/s2.
Which of the following statements applies to deductive reasoning? 1 Deductive reasoning applies specific knowledge. 2 Deductive reasoning may lead to arguments that are not valid. 3 Deductive reasoning begins with a general statement. 4 Deductive reasoning can be used for hypothesis testing.
Answer:
3 deductive reasoning begins with a general statement hope .
Explanation:
I'mI'm wrong hope I'm not wrong if I'm wrong you can correct me right away thank you
How does an insulator stop the flow of an electric current?
A) Electrons in an insulator do not move readily
B) Insulators convert electric energy to other forms of energy
C) Insulators have too many electrons
D)Insulators have a positive charge so they absorb electrons
If the Earth’s axis was TILTED MORE than it already is, what would happen to the seasons? *
Summer and winter would get more extreme.
The seasons would stay the same as they are now.
We’d still have summer and winter, but they’d be less extreme.
There would be no changing seasons. It’d be the same year-round.
Answer:
I'm not sure however I think it could be the first option