what is one thing that would make evidence from an experiment more reliable? A if there was no comparison group B if there was a small sample C if the source of the information was an expert D it is not D i tried D already
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Answer:
Explanation:
When a scientist repeats an experiment with a different group of people or a different batch of the same chemicals and gets very similar results then those results are said to be reliable. Reliability is measured by a percentage – if you get exactly the same results every time then they are 100% reliable.
Related Questions
Why is it necessary to ensure that unreacted chlorine gas is passed into a fume cupboard when reacting with alumnium?
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How do Solids, Liquids and Gasses differ?
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Answer:
A solid is the hardest state of matter and require a liquid to freeze and is firm and stable in shape. A liquid is a a substance that flows freely but is of constant volume and can form when gas is cooled down. A gas is a state of matter that has no fixed shape and no fixed volume.
Explanation:
Answer:
The first person is right.
1. Freedom of motion of their particles
2. How strongly particles attract each other
solid-----Constant shape and constant volume
liquid-----variable shape, constant volume
gas--------variable shape, variable volume
Where is the DNA stored in a cell?
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Answer: nucleus
Explanation:
Science questions answer to get 20 points
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Answer: (Q1) B. (Q2) D. (Q3) B. I believe (Q4) C.
Explanation: (Q3) B the medulla isn't playing a physical part in digestion as much as it controls the process this is a educated guess
Candice did an experiment where wondered if temperature affects how cheese molds. She put a piece of cheese next to a different heat lamp and then measured how much mold was on each cheese. What is the DEPENDENT variable?
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a horizontal force of 8N being applied to an object with a mass of 4.0-kg.
**What is the blocks acceleration?
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Answer: d)
Explanation: d) What is the acceleration of the Earth due to the force of the person? ... What is the net force acting on an object that is being pulled by a force of 5 N at 30°, ... A cart having a mass of 15 kg, rolling from left to right on a horizontal surface, ... Fging -(15kg) (4,81162) 147.15 N ... 12-newton force being applied to two blocks, A.
Explanation:
2 m/ s² acceleration because you know that F= ma.
Give an example that shows energy transfer and another one that shows energy transformation.
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Answer:
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Explanation:
cual es la diferencia entre capacidad termica calor especifico y calor latente
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Answer:
El calor específico es el calor requerido para el proceso de cambio de temperatura de la sustancia, mientras que el calor latente es el calor requerido en el momento del cambio de fase de una sustancia.
Explanation:
See pic pls dont take a long time pls
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The group of students is incorrect. Boiling water is NOT a chemical change. The group incorrectly identified it as a chemical change because the water changed to steam and bubbles.
Boiling water is a physical change to steam and bubbles but it is still water. The steam puts itself into the air as evaporation. The opposite of evaporation is condensation, when water vapor condenses back into tiny droplets of water.
A chemical change is when something changes and becomes a new substance or property, like burning wood.
A physical change is when the appearance or form of the substance changes but the kind of substance doesn’t, just like the boiling water.
Describe how organisms in the tropical rainforest both depend on and compete for biotic and abiotic factors. In your answer, identify which factors are biotic and which are abiotic.
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What are biotic and abiotic factors?
Biotic and abiotic are the two essential factors responsible for shaping the ecosystem. The biotic factors refer to all the living beings present in an ecosystem, and the abiotic factors refer to all the non-living components like physical conditions (temperature, pH, humidity, salinity, sunlight, etc.) and chemical agents (different gases and mineral nutrients present in the air, water, soil, etc.) in an ecosystem. Therefore, both the abiotic and biotic resources affect the survival and reproduction process.
Answer:
Abiotic factors in the tropical rainforest include humidity, soil composition, temperature, and sunlight. A limiting factor in the ecosystem is that canopy layers block sunlight from reaching the forest floor, causing shorter plants to not be able to grow. Biotic factors in the tropical rainforest include orchids, lilies, heliconia, and bromeliads. Tropical rainforests can have various fungi, shrubs, herbs, woody vines, lichens, and mosses. The trees making up the rainforest canopy include the tonka bean wood, teak, rubber, and several species of evergreens and palm trees. This way the organisms in the tropical rainforest both depend on biotic and abiotic factors.
Which of the following problems would be a direct result of humans building along the ocean shore zone?
A. the erosion of the sand and soil from the shoreline
B. sand dunes and vegetation being disturbed
C. the movement of sand from one place to another
D. sand being washed away over long periods
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Answer:
I think it is B.
Explanation:
The erosion of the sand and soil from the shoreline would be a direct result of humans building along the ocean shore zone. When humans build structures along the shoreline. This can lead to increased erosion of the shoreline and loss of the beach.
Building along the ocean shore zone can have several impacts on the natural environment. One of the direct impacts is the erosion of the sand and soil from the shoreline. This occurs because construction can disrupt the natural processes that maintain the beach, such as the movement of sand and the protection provided by vegetation.
For example, building seawalls or other structures can prevent the natural movement of sand and sediment along the beach. This can lead to erosion of the shoreline, as the sand is no longer able to accumulate in areas where it is needed to protect the shoreline. These plants help to hold the sand in place and protect the beach from erosion.
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The magnification of a light microscope can be found by multiplying the power of the eyepiece by the power of the objective lens. Calculate the magnifications of a microscope that has an 8X eyepiece, and 1OX and 40X objectives.
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For the 10X objective:
Total magnification = Eyepiece magnification x Objective magnification
Total magnification = 8X x 10X
Total magnification = 80X
So the total magnification for the combination of the 8X eyepiece and the 10X objective is 80X.
For the 40X objective:
Total magnification = Eyepiece magnification x Objective magnification
Total magnification = 8X x 40X
Total magnification = 320X
So the total magnification for the combination of the 8X eyepiece and the 40X objective is 320X.
Answer: For 10X objective =80X
For 40X objectives =320 X
Explanation: The magnification of a light microscope can be computed by multiplying the power of the eyepiece by the power of the objective lens.
For the 10X objective = power of eyepiece × power of objective lens= 8X × 10X
= 80X
For the 40X objective = power of eyepiece × power of objective lens= 8X × 40X
= 320X
Please help me I will give you the brain thing and extra points. 2
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How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
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c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
For this assignment, you will develop several models that show how light waves and mechanical waves
are reflected, absorbed, or transmitted through various materials. For each model, you will write a brief
description of the interaction between the wave and the material. You will also compose two typewritten
paragraphs. The first will compare and contrast light waves interacting with different materials. The
second will explain why materials with certain properties are well suited for particular functions.
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Transverse Waves.
Longitudinal Waves.
Sound Waves.
Water Waves.
Spring Waves.
Stadium Waves.
Jump Rope Waves.
Seismic Waves.
Help?
Describe a mineral in your own words.
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e.g. calcium and phosphorous
Please help me. I need help
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Answer:
they both collided is one i guess
Explanation:
Help me out, please.
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Answer:
I'm going to have to say A
Explanation:
Jan drew a diagram to compare centipedes and millipedes.
Which belongs in the area labeled Y?
are active predators
have two pairs of legs on each segment
use specialized mouthparts to attach to hosts
use claws to inject venom
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Answer:
BBB millipedes have two sets of legs on each segment.
Explanation:
Answer:
The answer is B:have two pairs of legs on each segment.
Explanation:) hope this helps have a great day ! :)
Brainliest would be very appreciated.!
If a substance has a density of 19 g/cm3, then what is the mass of 8 cm3 of this substance?
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Do all organisms have organs? Explain
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Answer:
No, there are some organisms that only have one cell, although there are organ systems that are made up of many cells. Not all organisms have organ systems.
Explanation:
For example, the Trichoplax. It is an animal with no organs that is tiny and multicellular, and only feeds on microalgae. A Trichoplax are flat organisms about a millimetre in diameter with no internal structures and typically have two cellular layers. These organisms live in the oceans and seas all around the world but are not necessarily found in their natural habitat, more so in captivity such as a marine aquarium. Trichoplax are found to live in symbiosis with such things as bacteria and others in the oceans and seas.
PLZZZZZ help ASAP!!!!!!! THANK YOU. :) i need all 3 and thank you again!
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B.Divergent
C. Convergent
a major use of magnesium oxide is as a refractory material.
explain in terms of structure and bonding, why magnesium oxide has a very high melting point.
[ this is 4 marks, please provide a good answer ]
[ giving brainliest + thanks on profile ]
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Sodium oxide has a high melting point because of the strength ofits bonds. Due to having strong bonds, they cannot be broken veryeasily. Magnesium chloride is ionic compound. There is a strong electrostatic force of attraction between 2 chloride atoms and 1 magnesium atom.
Because it retains its strength at very high temperatures. It is considered a refractory material with a melting point of 6500 degrees F. It is also very non-reactive with other materials that might be put into the furnace and is even used to make crucibles - containers used to melt other substances.
The strength of ionic bonds usually depends on two factors - ionic radius and charge. Mg+2
and O−2 have charges of +2 and -2 respectively. This is larger than the charges of other ions like Na+ or NO-3. Magnesium ions and oxygen ions also have small ionic radius. Magnesium is in period 3 so its ion is smaller than that of calcium or barium. Oxygen ion is smaller than sulfide and fluoride. The smaller the ionic radii, the smaller the bond length and the stronger the bond. Therefore the ionic bond between magnesium and oxygen is very strong.
In this activity, you will investigate how the motion of objects of different masses is affected when the same force is applied to them. You will use the scientific method to set up your experiment. Question__________________________________.
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Answer:if a bot walks up to you what do you do
Explanation:
you slap the F out of them
ASAP need answer
When is a scientific theory formed?
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Answer:when a hypothesis is given a repeated exposure to experimentation and is not falsified it increases the confidence of biologist's on that hypothesis such hypothesis form the basis of formulating further hypothesis which are then experimentally proved.The hypothesis that stand the test of time often tested and never rejected are called theory.A theory can be denied by further observations.
Table 3: Terrestrial Planet Surface Features Images Mercury Venus Earth Mars Image shows plains and craters on the surface of Mercury formed by volcanic flows. Image taken by the MESSENGER robotic spacecraft orbiting Mercury. ©NASA Image of the Eistla Region on Venus. The circular features are volcanic domes. Radar image taken by the Magellan robotic space probe. ©NASA Image shows Nyamuragira volcano in Africa. Dark areas of the image show recent lava flows. Image taken by the Ikonos satellite orbiting Earth. ©NASA Image shows Olympus Mons volcano on Mars. Image taken by the Viking 1 Orbiter. ©NASA How do the surface features of these terrestrial planets compare at this scale?
This is confusing, I know. Please try your best on your answer.
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Answer:
This isn't a question it looks like you copied and pasted something
1. First Experiment: Thomson directed the beam at an electrometer and tried to separate the
evidence of charge from the path of the beam. What connection did Thomson find between
charge and the cathode rays? Was the charge positive or negative?
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What's lithium ?
Please explain :)
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Lithium is a soft, silvery-white, metal that heads group 1, the alkali metals group, of the periodic table of the elements
In this cellular respiration process, some chemical bonds between atoms in oxygen and glucose molecules are _____. As atoms are rearranged, new chemical bonds are _____ between different atoms to produce carbon dioxide gas and water. This process releases energy.
The blank options are broken, and formed.
IXL N.2 7th Grade Science
Understanding the chemistry of cellular respiration
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Answer:
In this cellular respiration process, some chemical bonds between atoms in oxygen and glucose molecules are broken. As atoms are rearranged, new chemical bonds are formed between different atoms to produce carbon dioxide gas and water. This process releases energy.
In this cellular respiration process, some chemical bonds between atoms in oxygen and glucose molecules are broken. As atoms are rearranged, new chemical bonds are formed between different atoms to produce carbon dioxide gas and water. This process releases energy.
Using the data on the map, compare the chance of precipitation in Colorado to the
chance of precipitation in New York State. Include both states in your answer and
support your answer with scientific reasoning.