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Scientific Method
The scientific method is the basis of scientific investigation. A scientist will pose a question and formulate a hypothesis as a potential explanation or answer to the question. The hypothesis will be tested through a series of experiments. The results of the experiments will either prove or disprove the hypothesis. This category should contain questions and answers regarding the scientific method.
4,392 Questions
What is the difference of relative density versus density?
Now, let's say you have some other substance that also occupies one cubic meter but weighs 2000 kilograms. It has a density of 2000 kg/m3. In other words, relative to water, the substance is twice as dense as water. Now you have an idea of what relative density is.
If we use water as a reference, we can compare other substances' densities to the density of water. Simply divide the substance's absolute density by the absolute density of water to get the relative density of the substance (relative to water). Relative density is a unit-less quantity; it is just a number. If a substance is denser than water, its relative density will be greater than one. If it's less dense than water, it will have a relative density less than one.
Relative density is also known as Specific Gravity.
In what ways does koch's procedure demonstrate the use of scientific methods?
Koch's Postulates (Procedures):
Step 1. ASSOCIATION: The suspected pathogen must be consistently associated with the diseased plant (or animal).
Step 2. ISOLATION: The pathogen must be isolated and grown in pure culture and its characteristics described.
Step 3. INOCULATION: The pathogen from pure culture is inoculated into a healthy plant of the same species or variety and it must produce the same symptoms and signs.
Step 4. RE-ISOLATION: The pathogen is re-isolated from the inoculated plant and its characteristics must be the same as the organism initially isolated in step 2.
Ask a question- Is this a pathogen
Do Research- find the suspected pathogen and isolate it and grow a pure culture
Construct a Hypothesis-
Test- Inject suspected pathogen into healthy organisms
Analyze and Conclude- If suspected pathogen has produced same signs and symptoms in multiple tests on same organisms then it is indeed a pathogen
Communicate Results
Does salt effect the freezing process of water?
Salt molecules bond with water molecules, making it more difficult forr icce to form. The results is a lower freezing temperture. For example, a 10% salt solution freezes at 20'F (-6'C) , while a 20% salt solution freezes at 2'F (- 16'C).
What is the method of solving scientific problems based mostly on observations?
im not exactly sure what it is but i think it might be a 11 letter word second letter is e
Why are glass tubings rotated while being heated?
Since glass is a poor conductor of heat, it may crack on uneven heating. Therefore, in order to heat it evenly, you have to rotate the glass tubing.
What bias is in an scientific experiment?
If for example, some of the measuring equipment were incorrectly calibrated. For example a cloth measuring tape will over time, stretch, and thus underestimate the true length. If a beam balance were not correctly leveled, then the balance point would be wrongly shown, and the weighings would be in error. These errors would be bias. In addition, there are some operator errors. A well known one is for a particular operator, when estimating the fine graduations of a scale, to have a bias towards even numbers.
What is the Hypothesis about the apple turning brown?
That the lime was going to help the apple from turning brown.
To her surprise, the weights land at exactly the same time
-Apex
How is Hypothesis different from scientific law?
A hypothesis is a guess when a scientific law has been answered and proven.
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State the problem: How can we prove Earth is round and calculate its circumference?
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Make a hypothesis: If the sun casts shadows at different angles at the same time of day in different places, we can determine how much Earth curves.
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Make observations and collect data: In Syene, the sun's rays are vertical at noon. At the same time in Alexandria, the rays are 7.2 degrees from the vertical.
What is the steps of the scientific method?
1). identify the problem
2). collect information
3). make a hypothesis
4). test your hypothesis
5). record and analyze
6). draw a conclusion
What are the steps for following a scientific method?
ewan nag ttanung lang din akoh ii..soriie poh...
What is a collection of atoms called?
A large collection of neutral atoms with the same atomic number is a sample of an element. Elements include include lithium, hydrogen, neon, and oxygen. Note that different isotopes of elements exist; these are atoms with the same atomic number but having a different number of neutrons.
Identify the scientific method in the correct sequence?
1.Observe
2. Hypothesis
3. Background
4. Materials/procedure
5. Experiment/data collection
6. Analyze data
7. Draw conclusion
8. Make a new hypthesis
9. Variables !
What does a hypothesis have to do with a science project?
In short, a hypothesis is a statement believed to be true - because of observation or reasoning, for example - but one not yet tested by experiment, or, in mathematics, not formally proven to be true. Hypotheses in science are often predictive, and their predictions can form the basis of experiments to prove or refute them.
That really captuers the spirit of it. Thanks for posting.
It is spelled inference.
It means a logical deduction, but not a proof, based upon the facts at hand.
For example, if you mix two liquids together, and the resulting liquid becomes warm without the benefit of an external heat source, you can make an inference that the two liquids combined in an exothermic chemical reaction that caused the liquid to heat up.
What is an example of qualitative property?
Qualitative Properties: If you see, taste, hear, touch and/or smell something through observation, like the color, texture, state, and movement of matter, you are witnessing qualitative properties.
A characteristic of a substance that can be described, but not measured. (i.e. colour)
What type of fault caused the rat islands earthquake?
On February 4th, 1965, a reverse fault caused the Rat Islands Earthquake, Alaska, at 5:01 A.M.
The epicenter is directly above the focus, or starting point, of the earthquake. Anyone standing there would be the first to feel the vibrations.
Seismic waves can vary from a low speed of 2 to 8 kilometers per second in the earth's crust to as much as 13 kilometers per second in the deep mantle. Some waves that go downward and reflect up off the earth's core may actually arrive before the waves that go in a straight line!
A rough approximation says that someone 50 miles away would feel the vibrations between 6 and 40 seconds later.
A+ls: before the other person
What step of the scientific method involves identifying variables?
The first step of the scientific method requires scientists to observe in order to obtain information. The next step is to formulate a hypothesis.
What step of the scientific method immediately follows the hypothesis?
-_- figure it out u need to be smart -_-
In science does the hypothesis have to be testable?
A hypothesis is often used as a starting point to define the scope and objectivity of performing an experiment. A hypothesis is a statement that implies there is insufficient evidence to support an idea or an explanation of an observation or principle. It is a statement of unproven fact, sometimes just a guess that is tentatively accepted as a basis or foundation for further investigation. If a hypothesis is proven to be correct beyond reasonable doubt, it becomes a theory and is generally accepted by the scientific community. I hope this answered your question!
What are primary and secondary effects?
A primary affect is what happens during and throughout the day of the earthquake. Earthquake primary effects may include:
- landslides
- trees collapsing
- buildings collapsing
- people buried in rubble
- school children trapped under collapsed schools
- Poorly built buildings toppling over
- Limbless crying orphans impaled on twisted metal poles.
and secondary affects are the consequences of the primary effects, or the things that happen later on from the earthquake. Some secondary effects may include:
- homelessness
- need of emergency housing
- households were inaccessible by road due to landslides
- food will be lost
- Disease spread, sourced from people drinking the dirty, contaminated water
- Cracks in the ground and walls.
- buildings split in two.
- Lots of rubble that takes years to move
