1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ratling [72]
3 years ago
12

during convection, hot material _____ (expands & sinks, cools & rises, expands & rises, deflates & rises) then m

oves to the side and _____. ( cools & sinks, deflates & rises, expands & sinks, warm & rises) this circular pattern is called a convection current.
Physics
2 answers:
Lady bird [3.3K]3 years ago
4 0

Answer:

During convection, hot material expands & rises then moves to the side and cools & sinks. this circular pattern is called a convection current.

Explanation:

Convection is one of the three methods of transfer of heat. It occurs only in fluids (liquids or gases).

Convection occurs when there is a source of heat that heats a fluid, such as in a boiling pot of water. The water which is on the bottom of the pot becomes warmer before than the water at the top (because it is closer to the flame), and so it becomes less dense: for this reason, it expands and it becomes rising. On the contrary, the water on top is colder, so it is more dense and starts sinking, replacing the warmer water. As the new part of water gets warmer, it starts rising, and so the process is continuously repeated. This circular current is called convection current.

Tju [1.3M]3 years ago
4 0
During convection, hot material expands and rises then moves to the side and cools and sinks.
You might be interested in
If an amount of heat Q is needed to increase the temperature of a solid metal sphere of diameter D from 4°C to 7°C, the amount o
Hitman42 [59]

Answer:

Q = c M ΔT      where c is the heat capacity and M the mass present

Q2 / Q1 = M2 / M1    since the other factors are the same

M = ρ V     where ρ is the density

M = ρ Π (d / 2)^2           where d is the diameter of the sphere

M2 / M1 = (2 D/2)^2 / (D/2)^2 = 4

It will take 4Q heat to heat the second sphere

7 0
2 years ago
If a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:​
Stolb23 [73]

Answer:

32

Explanation:

the atomic mass is the number of protons and neutrons in the nucleus of an atom

so we will add 16 + 16 = 32

8 0
3 years ago
"what shape are the pebble-sized particles that make up the rock?"
Fiesta28 [93]
The shape of which the pebble sized particles that makes up the rock is more of a rounded shape as they are bits and in circular formation, depicting it to be more rounder in which are particles that is made up in a rock. They can be in pebble sized or much more smaller than that when in bits.
5 0
3 years ago
Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject materia
melisa1 [442]

Answer:

H_2 = 91.55 km

Explanation:

Gravity on the surface of planet is given as

g = \frac{GM}{R^2}

as we know that

M = 8.93 \times 10^{22} kg

R = 1821 km

now gravity on the planet is

g = \frac{(6.67 \times 10^{-11})(8.93 \times 10^{22})}{(1821 \times 10^3)^}

so we have

g = 1.8 m/s^2

now we know that

H_{max} = \frac{v^2}{2g}

so we will say

\frac{H_1}{H_2} = \frac{g_2}{g_1}

\frac{500}{H_2} = \frac{9.81}{1.8}

H_2 = 91.55 km

5 0
3 years ago
What are the two key elements needed for fossilization
xenn [34]
Body Fossils and Trace Fossils.


Hope I helped and good luck with school. Bye!
3 0
4 years ago
Other questions:
  • A bicyclist of mass 112 kg rides in a circle at a speed of 8.9 m/s. If the radius of the circle is 15.5 m, what is the centripet
    5·2 answers
  • What is the weight of a 225kg space probe on the moon and the acceleration of gravity on the moon is 1.62
    12·2 answers
  • The brightness of a star is determined
    11·2 answers
  • Several large firecrackers are inserted into the holes of a bowling ball, and the 6.3 kg ball is then launched into the air with
    5·1 answer
  • Instructions:Select the correct answer from the drop-down menu. The Longmenshan Fault is in China. This fault was created when t
    8·1 answer
  • 3. A football is kicked with a speed of 35 m/s at an angle of 40°.
    13·1 answer
  • During the process of mountain building, earthquakes sometimes occur along continental-continental convergent boundaries. Which
    12·2 answers
  • if you have a stick magnet and a u magnet plus a frigde magnet what way will it pull and which one is the strongest if it does n
    7·1 answer
  • Which type of wave does the illustration depict?
    9·2 answers
  • A 2.0-kg projectile is fired with initial velocity components v0x = 30 m/s and v0y = 40 m/s from a point on the Earth's surface.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!