PHYSICS MIDDLE SCHOOL

Which describes the characteristics of a liquid? A.
It has no fixed volume or shape.

B.
It has a fixed volume and varied shape.

C.
It has high energy and expands to fill the container.

D.
It has a fixed volume and shape.

Answers

Answer 1
Answer: the right answer is B because a liquid can take the shape of anything its in but it has the same volume

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Explain what it mean to say that energy is conserved

Answers


It really means that the total amount of energy in the universe is
a fixed number, and doesn't change.

So if you're watching what's going on in some fixed bottle, box, pot,
or other volume, 'conservation' means that no energy can magically
appear in the bottle or disappear from it.  The total amount of energy
can't change.  The energy can only move from one place to another. 
So if you see the amount of energy change inside there, then you
know that either some of the original energy must have leaked out
and escaped, or else more energy came in from somewhere.

This is actually a very powerful thing to know.  It helps solve a lot
of problems.

Physical properties of minerals graphic organizer

Answers

The answer is in the attachment
...........................................

3. Three metal spoons are on a table. They are each at room temperature. If the three spoonstouch,
heat will flow among all three spoons.
heat will flow between two spoons.
no heat will flow among the spoons.
o heat will flow from the spoons to the air.

Answers

If the spoons touch, no heat will flow among the spoons. This is because they are already at thermal equilibrium with each other. This is hinted by the statement "they are at room temperature" which means they all have the same temperature. Heat only flows when there is a difference in temperature.

3 characteristics of physical change

Answers

Answer:

Explanation:

A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Answer: it involves a change in physical properties, such as melting, condensing, evaporating, change of color, shape, size, volume an density

A transfer of heat within a liquid or gas that involves warm particles moving in currents isa convection.
b connection.
c correction.
d conduction.

Answers

So the question is what is a transfer of heat within a liquid or gas that involves warm particles moving in currents. So there are three mechanisms of moving heat. Those are convection, conduction and radiation. Radiation is transfering energy via electromagnetic waves. Conduction is transfering heat trough some thermal conductor. Convection is transferring heat within a liquid or gas that involves warm particless moving in currents.

THE ANSWER IS

A; convection.

How do fission nuclear reactions differ from fusion nuclear reactions? Fission reactions involve the conversion of matter into energy, but fusion reactions do not. Fusion reactions involve the conversion of matter into energy, but fission reactions do not. Fission reactions are used to generate electricity for consumers, but fusion reactions are not. Fusion reactions are used to generate electricity for consumers, but fission reactions are not.

Answers

How do fission nuclear reactions differ from fusion nuclear reactions?

A. Fission reactions involve the conversion of matter into energy, but fusion reactions do not.

B. Fusion reactions involve the conversion of matter into energy, but fission reactions do not.

C. Fission reactions are used to generate electricity for consumers, but fusion reactions are not.

D. Fusion reactions are used to generate electricity for consumers, but fission reactions are not.

Answer:

C

Explanation:

Both fission and fusion are nuclear reactions that produce energy, but their applications differs.

 Fission is the splitting of a large (heavy, unstable) nucleus into smaller ones, and fusion is the process where nuclei of small atoms are combine together to form the nuclei of larger atoms releasing vast amounts of energy.

The correct answer is c. Fission reactions are used to generate electricity for consumers, but fusion reactions are not.

The physics of fusion is the process that makes the sun shine, and that makes the hydrogen bomb explode.

Answer:

C

Explanation:
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