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2 years ago

In your own words describe three key features of a fair test

Biology

2 answers:

Ainat [17]2 years ago

3 0

Answer:

In a fair test two or more things are compared. In order for a test to be fair or scientifically sound, children are required to ensure only one thing (this is called a variable) is changed.

For example, if testing which material is the most waterproof by pouring liquid onto a selection of different materials, in a fair test only the type of material (the component you are testing) should be changed. Therefore all other elements (the type of liquid used, the amount of liquid used, the distance the liquid is poured from, the speed at which it is poured and the size of the material) must remain the same each time the test is carried out. It would be unfair or an unscientific test if, for example, 1000ml of water were poured onto a piece of foil and 2ml of milk poured onto a piece of foam – you would not be able to fairly compare the materials.

hope this will help you!!!.....

fredd [130]2 years ago

3 0

Answer:

A fair test is a test which controls all but one variable when attempting to answer a scientific question. Only changing one variable allows the person conducting the test to know that no other variable has affected the results of the test.

Hope it helps....

Have a great day : )

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in this diagram, the moon is directly in front of the earth. Where would most likely happen if the moon was not directly in fron

koban [17]

Answer:

Moon and Earth:" The moon is an astronomical entity which is smaller in size, as compared to Earth's body, and revolves around the Earth."

It is revolving around the Earth from billions of years on a very specific path, which is tilted at 5 degrees to the plane of earth's orbit around the sun.
When the Sun, moon, and the earth are completed aligned at the same angle, having the 0° angle between them, while the moon completes all it phases is called as lunar cycle.

Explanation:

Effect of Moon Position around the Earth-

It is said that for all this time the astronomical body which is considered the most important to drive life on earth is moon.Now, the moon is considered to be responsible for the high and low tides on the surface of earth.

And the biological environment is sustained on earth, due to moon's position around the earth in a specific orientation, which is maintaining the life on earth, and keeping the atmosphere and biosphere in stable level.

And if moon displaces from its position then obviously high tides will vanquish, resulting in low tides in the ocean. Along with which the stability in the biosphere and atmosphere will decrease with time.

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3 years ago

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Which of the following genera is an anaerobic gram-negative rod? A) Escherichia B) Staphylococcus C) Bacteroides D) Treponema E)

nadya68 [22]

b. staphylococcus is the answer

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3 years ago

Read 2 more answers

Voluntary control of skeletal muscles is provided by the

lord [1]

The correct answer is: b. corticospinal pathway

The corticospinal pathway is a motor pathway that starts at the cerebral cortex and terminates on lower motor neurons and interneurons in the spinal cord. Its function is to control the movements of the limbs, directly and voluntary.

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3 years ago

What type of survivorship curve do human beings show? Explain why we are that type?

myrzilka [38]

Answer:

its not type 2

Explanation:

I got it wrong

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2 years ago

Does prokaryotes consist of chromosomes?

Levart [38]

Well Prokaryotes usually consist of only one chromosone.

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3 years ago