4. What would you use to measure the distance from your house to the
school? *
meters
centimeters
mimeters
kilometers
Answer:
kilometers
Explanation:
a kilometer equals 1,000 meters
What are the parts of an atom and the charges associated with each part?
Which feature of nuclear fission reactions allows these reactions to take place in a chain reaction?
Thermal energy is released and heats up the reactants.
More smaller atoms form that can undergo fission.
A larger atom is formed, which can then be split.
Neutrons start the reaction and are released during it.
Answer:
Neutrons start the reaction and are released during it
Explanation:
N
Neutrons start the reaction and are released during it is the correct answer.
What is responsible for chain reaction?Neutrons start the reaction and are released during it is the feature of nuclear fission reactions that allows these reactions to take place in a chain reaction because the neutron that is released hit the other atom which leads to the start of other reaction and so on.
so we can conclude that Neutrons start the reaction and are released during it is the correct answer.
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The formula CaCI2 represents the compund___
What best describes the scientific process?
Answer:
B.
Explanation:
The scientific method follows a series of six steps in which it includes the one from observation to reaching a conclusion.
The statement that best describes the scientific process is that it is a way to answer scientific questions.
What is the scientific process?The scientific process is a method of discovering knowledge about the natural world in the following manner:
making falsifiable predictions (hypotheses). testing them empiricallydeveloping theories that match known data from repeatable physical experimentation.The scientific process involves the following steps:
Asking a questionDoing background researchConstructing a hypothesis. ...Testing of the hypothesis by doing an experimentAnalyzing the data and drawing a conclusionThe aim of the scientific process is to answer a scientific question or proffer solution to a problem.
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When does the first quarter phase of the moon occur?
Select one:
a. three weeks after the new moon phase
b. one week after the full moon phase
c. two weeks after the third quarter phase
d. two weeks after the new moon phase
Answer:
l think
b. one week after the full moon phase
Why is water necessary for living things?
Answer:
To survive
Explanation:
Without water, we wouldn't have organisms such as fish. We also need it to break down food molecules or generate energy during the respiration process.
Which type of microscope allows you to look at 3D objects? *
compound
stereoscope
magnifying
simple
Answer:
Stereoscope
Explanation:
Stereo Microscopes enable 3D viewing of specimens visible to the naked eye.
The alignment causes a solar eclipse.
Answer:
Whats the question?
Explanation:
Answer:
the moon moves just far enough to cast a shadow to cause an eclipse.
what causes a population to reach is carrying capacity
Answer:
Good well fare taxes and pricing
Explanation: not only that but benefits with health and cost for homes and the environment
PLS HELP ME ANSWER THIS AS FAST AS POSSIBLE!!!!!
Answer:
1st
Explanation:
1st answer im pretty sure, cuz cells are pretty simple, and in the end its the organism which makes up all of it
atoms in covalent bonds___their electrons
Answer:
gain there electrons that they didn't have before
Observations, evidence and data that people gather and test support and evaluate scientific explanations is called _____ *
Answer:
the answer is theory
Explanation:
hope you have what you are looking for! Thx!
E.Coli is a type of prokaryotic bacterium that is present in contaminated food. Which describes where the genetic material is found
A.cytoplasm
B.Cell membrane
C.Ribosome
D.Nucleus
Answer:
Cytoplasm
Explanation:
In prokaryotes DNA is located directly within the cellular cytoplasm
In the E.coli, that is, a prokaryotic bacterium, the genetic material is found in the cytoplasm.
The genetic material in E.coli:E.coli is a prokaryotic bacterium, and in all the prokaryotic cells, genetic information is carried on a single circular strand of DNA, which is either present in direct contact with the cytoplasm or is attached to the cell membrane.
In the prokaryotes, no enclosing membrane organelle is present, therefore, no nucleus is found. They comprises a concentration of DNA called nucleoid, which is not encircled by a nuclear membrane. Apart from this, no unique proteins are found attached with the molecule of DNA.
Thus, the correct answer is option A, that is, cytoplasm.
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Mosquito repellent is sprayed on one arm and the other one is not sprayed. the number of mosquito bites is counted after 2 hours. what is the dependent variable and independent variable?
Answer:
who will answer this
Explanation:
Draw and label a simple explanation model that shows where wood for building homes comes from.
Answer:
Forest.
Explanation:
Wood comes from forest which is used for building homes. The big source of wood are the forest present on hilly areas where woody plants such as pines are grown and cut down when they acquire a specific length and width. These woody plants are used to build houses and furniture etc. Wood has 20% higher strength to weight ratio than structural steel so that's why it is for building houses.
What is the relationship between temperature and abundance life
Answer:
As average temperatures at the Earth's surface rise, more evaporation occurs, which, in turn, increases overall precipitation. Therefore, a warming climate is expected to increase precipitation in many areas.
Leigh investigates the color of shells deposited on a beach as she walks along the coastline. She wants to know whether this variation in color is due to chance or if it is significant. Data was collected over a minimum 20 cm long region at four sites along the beach coast. Shells were categorized into four different shades, 1 being the lightest and 4 being the darkest. What is the mean number of shells collected?
Answer:
the data is QUANTITAVE because it includes data that are NUMBERS a CHI-SQUARE will be used ...
Explanation:
right on edge for ap bio
Answer:
slide 4 is 4.79
Explanation:
correct on ap bio edge 2021
what does selective permeability mean?
Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell.
Which is a nonrenewable resource
Answer:
coal,fossil fuels,nuclear energy i think
Answer:
Coal
Explanation:
Coal is a mineral found in caves so it cannot be made. That is why it is nonrenewable.
Which of the following leads to genetic variation in gene pools?
A. gene flow C. mass extinctions
B. isolation D. punctuated equilibrium
Answer:
b
Explanation:
An organic molecule will always contain
carbon
carbon and hydrogen
OO, H. and C
hydrogen
Answer:
carbon atoms
Explanation:
all organic molecules have carbon.
5. Explain why a washing machine would be considered technology.
Answer:
It's technology because it does a certain service for you with less time wasted if you did it by hand.
Explanation:
If you have an experiment in which there are 4 different groups, and the same variable is manipulated in all of them, is there a control group?
Answer:No
Explanation:I believe it is no due to the fact that the variable is being manipulated in all groups and in order to be a control groups the variable must remain the same or must not be manipulated.
hope this helps :)
Which two characteristics are used to classify stars on the Hertzsprung-Russell diagram?
size and density
density and composition
composition and temperature
temperature and absolute brightness
Answer:
Temperature and absolute brightness
Explanation:
The X-Axis of the diagram is heat, and it actually goes down in heat.
The Y-Axis is for brightness, and it works like a regular axis, meaning as it goes up, the number or unit of some sort, in this case luminosity, goes up.
Two characteristics are used to classify stars on the Hertzsprung-Russell diagram are temperature and absolute brightness
What is the Hertzsprung-Russell diagram?The Hertzsprung-Russel diagram or HR diagram is a graphical tool using a scatter plot used by astronomers to classify stars according to their:
luminositycolor temperaturespectral typeHere, The HR diagram plots as either
the temperature of the stars versus the luminosity OR the color of stars versus absolute magnitude.Therefore two characteristics used to classify stars on the Hertzsprung-Russell diagram are temperature and absolute brightness(Luminosity)
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Can someone help me with these questions?
Answer:
1.32°F
2.212°F
Explanation:
1.The melting point is the temperature at which a solid turns to a liquid. The melting point at which ice — a solid — turns to water — a liquid — is 32°F (0°C).
2.Water boils at 212°F at sea level, but only at sea level. Changes in atmospheric pressure will alter the temperature at which water boils. To use this calculator you will need your current pressure and elevation.
3.In other words, the water molecules within ice move faster. However, temperature doesn't change as heat is added during a phase change; for example, when the ice melts. During the phase change, the added heat doesn't make the molecules move faster, but rather further apart.
About how much energy’s lost when an organism consumes another organism from a different trophic level?
Answer:
10 percent of energy is transferred to the next level of organisms so that would lead me to believe that 90 percent of the energy is lost.
Different chemical elements will create a different scattering of absorption lines in the spectrum of visible light. We understand the interaction of an atom with light and because of this we can predict where the lines should be and verify this in a lab this process is called
Answer:
Hydrogen emits and absorbs light at specific wavelengths, therefore if you're looking at a distant cloud that produces a certain spectrum
Explanation:
Why is the polarity of water molecules and hydrogen bonding essential to adhesion and cohesion?
Some properties like Polarity makes water a good solvent, cohesion helps in stick water molecule to itself while adhesion helps it to stick with other surfaces. Water have surface tension due to hydrogen bonding.
What are the difference between adhesion and cohesion ?when two similar molecule come closer adhesion occur where as in cohesion two similar molecules face the force of attraction.
Adhesion is the force of attraction observed between the water molecules and xylem vessels while Cohesion is unrestrained among water molecules.
Capillary action and meniscus are the effects of adhesion while Surface tension, meniscus and capillary action are the effects of cohesion.
The major forces responsible for adhesion are electrostatic or mechanical forces while Cohesion is the result of hydrogen bonding and Van der Waals forces.
A strong adhesion can lead to spread of liquid all over the surface while cohesion forms water droplets.
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In the periodic table, periods are_____rows.
Answer:
It's a row of chemical elements
Answer:
The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.
Explanation:
Hope this helps! :)