All categories

3 years ago

Which statement describes a scientific theory?

2 answers:

7 0

Best Answer
C) is the best description, although a scientific theory is not necessarily a "fact". They are, however, based on evidence.

A) is complete garbage.

B) is a good description of a scientific "law"- something that predicts how a certain event will occur without explaining why this is (for instance, the law of gravity accurately describes the gravitational forces between two bodies, but does not explain why these forces are there).

D) is a scientific "hypothesis"- an explanation for an observed phenomena that is yet to be proven.

anyanavicka [17]3 years ago

5 0

The correct statement is C) A theory changes based on new observations and testing.

<h3>FURTHER EXPLANATION</h3>

A) A theory states how something behaves without explaining why.

FALSE because a theory is actually a statement that explains why an observed phenomenon happens. A statement or an observation of how something behaves without explanation is a scientific law, not a theory.

B) A theory is a proven fact that cannot be changed.

FALSE because a theory may be changed or proven false if new evidence that contradicts or debunks the existing theory comes to light. An example is the development from Classical Mechanics to Special Relativity to the Theory of General Relativity with each subsequent theory providing explanations to situations the preceding could not.

C) A theory changes based on new observations and testing.

TRUE because a theory is only valid when a lot of data support it. If new observations challenge the theory, then it may be changed or abandoned.

D) A theory is based on a single hypothesis or observation.

FALSE because a theory is considered as the best explanation for a phenomenon so far. For it to be considered the “best” it has to have been peer-reviewed and repeatedly tested and verified by the scientific community.

<h3>LEARN MORE</h3>

hypothesis brainly.com/question/2681563
scientific method brainly.com/question/550083
scientific law brainly.com/question/942536

Keywords: theory, scientific method

You might be interested in

A certain redox reaction takes place in a basic solution . which species must you include to balance the equation for this react

Arte-miy333 [17]

OH

*inserts random text so that this answer can be posted reaching the needed amount of words.*

3 0

3 years ago

Read 2 more answers

Physical properties of earth metals-

Liula [17]

Answer:

Properties of Alkaline Earth Metals

shiny.

silvery-white.

somewhat reactive metals at standard temperature and pressure.

readily lose their two outermost electrons to form cations with a 2+ charge.

low densities.

low melting points.

low boiling points.

Explanation:

4 0

2 years ago

Which type of precipitation occurs when the water vapor in a cloud freezes to form ice crystals?

Verizon [17]

Answer:snow i think

Explanation:

6 0

3 years ago

Read 2 more answers

A buffer solution contains 0.345 M acetic acid and 0.377 M sodium acetate . If 0.0613 moles of potassium hydroxide are added to

melamori03 [73]

Answer:

pH = 5.54

Explanation:

The pH of a buffer solution is given by the <em>Henderson-Hasselbach (H-H) equation</em>:

pH = pKa + log $\frac{[CH_3COO^-]}{[CH_3COOH]}$

For acetic acid, pKa = 4.75.

We <u>calculate the original number of moles for acetic acid and acetate</u>, using the <em>given concentrations and volume</em>:

CH₃COO⁻ ⇒ 0.377 M * 0.250 L = 0.0942 mol CH₃COO⁻

CH₃COOH ⇒ 0.345 M * 0.250 L = 0.0862 mol CH₃COOH

The number of CH₃COO⁻ moles will increase with the added moles of KOH while the number of CH₃COOH moles will decrease by the same amount.

Now we use the H-H equation to <u>calculate the new pH</u>, by using the <em>new concentrations</em>:

pH = 4.75 + log $\frac{(0.0942+0.0613)mol/0.250L}{(0.0862-0.0613)mol/0.250L}$ = 5.54

6 0

3 years ago

It refers to the length of the entire path the object travelled

kiruha [24]

Answer:

Path length is the overall distance traveled following the path of where the object travel. ... Displacement is the distance from the starting point of the object to its final point irregardless where it travels.

3 0

3 years ago