which of the following can cause an algal bloom ?
Answer:
I believe its either C or D
Answer:
The answer should be B.
Please look at these, i'm confused, i need the questions answered, and i need a graph or just need to know how to make the graph (idk how).
It is important that engineers build a structure that is safe. What do they look for when testing their designs?
Failure points
Fair tests
Prototypes
Variables
Answer:
Failure Points
Explanation:
Engineers want to test the areas that may possibly fail when they are building designs so when they go to actually build it they know it will not fail.
SCIENCE! PLZ HELP FAST !! URGENT!!
What happens to potential energy when you move against the magnetic force?
Answer: The field produces a repulsive force pushing them apart. They repel each other. In this case, the closer they are, the higher their potential energy will be. If allowed to move, they may move as far apart as possible or one will swing around to change its orientation.
Explanation:
Can you help answer BOTH questions pleaseee!!!
I have 11 protons, which element am I?
A. Silicon
B. Fluorine
C. Argon
D. Sodium
Answer:
D. Sodium
Explanation:
We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass).
The table shows the densities of four samples, each of the same volume.
DENSITIES OF SAMPLES
Sample Density (g/cm3)
W 5.1
X 1.7
Y 7.3
Z 3.5
Which sample has the greatest mass?
Answer:
Its Y
Explanation:
How are the scientific method and the engineering method similar?
Both methods identify failure points.
Both methods construct a hypothesis.
Both methods focus on designing things.
Both methods work on finding solutions to problems.
What does the conversation of mass say about the amount of atoms in the reactants compared to the products?
Answer:
the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.
Answer:
[tex]\boxed {\boxed {\sf Atoms \ in \ reactants \ = atoms \ in \ products}}[/tex]
Explanation:
The Law of Conservation of Mass states that mass cannot be created or destroyed.
In a chemical reaction, this means the mass of the reactants (substances going in and being changed) must equal the mass of the products (new substances from the reaction).
In addition, the amount of atoms must stay the same. The atoms can and will reconfigure to form different compounds, but the number of atoms stays the same.
When the boat is placed on the scale, how does its weight compare to the weight of the water it displaced?
Answer: It'll be lighter than when it is put on the water.
Explanation: Cause when a boat needs to move, it usually takes water into the engine, and then propulses it bk out.
Match the term with the definition.
Group of answer choices
Compressibility
Flammability
Heat of combustion
Toxicity
A) How easily can a substance be set on fire
B) Measure of how much heat is given off when a substance is burned
C) The ability of a substance to damage or harm an organism
D) Measure of how much the volume of matter can decrease under pressure
whats the order?
Answer:
here are your answers
Explanation:
compressibility ( D )
flammability( A )
heat of combustion ( B )
toxicity ( C )
please help me!!!! or my mom will ground me for 2 weeks :(
Explain the Flow of Energy in Photosynthesis: Where does the Energy come from initially? What is it called? What type of energy does it become? Finally what type of Energy is it broken down into? How does this all happen? Explain with details! I really appreciate your help
Answer:
The flow of photsynthesis comes from the sun
Explanation:
in which the plant absorbs. The plant then turns it into a type of food like glucose, protein, vitamin c etc. the plant uses this energy to help it grow!
Hoped this helped :)
How do matter and energy move through an ecosystem?
My scientific explanation is:
Your answer should include at least 6 complete sentences to explain the claim, evidence and reasoning.
Be sure to check your grammar and spelling.
Label the picture, please
Answer:
(in the pic above)
Explanation:
P= product
R= reactant
S= subscript
C= coefficient
Y= yields
Answer:
sorry BUT I need points
Explanation:
True or False: As air masses move, they rarely change temperatures and/or moisture levels.
Connect as many terms that you can think of. Each term should be related to
the term at the center,
LIGHT
Water’s chemical formula is . One atom of bonded to two atoms of . The hydrogen atoms are to one side of the oxygen atom, resulting in a water molecule having a positive charge on the side where the hydrogens reside and a negative charge on the other side, where the oxygen atom resides. This separation
of charge on of the molecule is called
word bank:H2O,oxygen,oppiste ends,hydrogen,attached,polarity
_____ relating to the separation of charges in a molecule
___ meaning to repel water, literally “fear of water”
___ this term describes the force of attraction between adjacent water molecules.
___ meaning attracted to water or literally “water loving”
___ term describing the tensional force created by water at its boundary with air
word bank: surface tension, cohesion, hydrophobic, hydrophilic, polarity
1. polarity
2. hydrophobic
3. cohesion
4. hydrophilic
5. surface tension
what do you mean by cohesion ?cohesion is an attractive force of measure where molecules are stick to each other and it is caused by cohesive force between like molecules.
It is an intrinsic property of a molecule, derived by its shape, structure, and electric charge distribution.
When cohesive molecules are become closer to each other, the electrical attraction between these molecule holds them together.
This forces are responsible for surface tension. For example mercury is a cohesive substance, strongly attracted to each other, bead together, sticks to itself when it flows.
When cohesion and adhesion combinedly work, it will lead to capillary action.
Hence, when water climbs up the interior of a thin glass tube or the stem of a plant, Cohesion holds the water together and adhesion helps the water molecules stick to glass.
Learn more about cohesion, here:
https://brainly.com/question/1928484
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I NEED HELP ASAP DON'T JUST ANSWER FOR POINTS OR YOU WILL GET REPORTED!
How many protons, neutrons, and electrons does potassium's neutral atom have?
Answer:
The number of neutrons is entirely dependent on the Mass number of the particular atom. The standard mass for potassium is 39.
Potassium is element number 19, so it has 19 protons and 19 electrons in the neutral atom. It has therefore 39-19 = 20 Neutrons.
Explanation:
Answer:
Number of Protons 19
Explanation:
Number of Neutrons 20
Number of Electrons 19
Melting Point 63.65° C
How do substances move across the cell membrane?
Answer:
The plasma membrane by diffusion
Explanation:
Materials move within the cell's cytosol by diffusion, and certain materials move through the plasma membrane by diffusion
Please help meeeee!!!!!!!
There is a big push right now in trying to rely on nonrenewable resources for the majority of our energy needs. Should we even try to power the world with 100% renewable resources? Justify your reasoning
Answer: Non-renewable energy comes from sources that will run out or will not be replenished in our lifetimes—or even in many, many lifetimes.
Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas. Carbon is the main element in fossil fuels. For this reason, the time period that fossil fuels formed (about 360-300 million years ago) is called the Carboniferous Period.
All fossil fuels formed in a similar way. Hundreds of millions of years ago, even before the dinosaurs, Earth had a different landscape. It was covered with wide, shallow seas and swampy forests.
Plants, algae, and plankton grew in these ancient wetlands. They absorbed sunlight and created energy through photosynthesis. When they died, the organisms drifted to the bottom of the sea or lake. There was energy stored in the plants and animals when they died.
Over time, the dead plants were crushed under the seabed. Rocks and other sediment piled on top of them, creating high heat and pressure underground. In this environment, the plant and animal remains eventually turned into fossil fuels (coal, natural gas, and petroleum). Today, there are huge underground pockets (called reservoirs) of these non-renewable sources of energy all over the world.
Advantages and Disadvantages
Fossil fuels are a valuable source of energy. They are relatively inexpensive to extract. They can also be stored, piped, or shipped anywhere in the world.
However, burning fossil fuels is harmful for the environment. When coal and oil are burned, they release particles that can pollute the air, water, and land. Some of these particles are caught and set aside, but many of them are released into the air.
Burning fossil fuels also upsets Earth’s “carbon budget,” which balances the carbon in the ocean, earth, and air. When fossil fuels are combusted (heated), they release carbon dioxide into the atmosphere. Carbon dioxide is a gas that keeps heat in Earth’s atmosphere, a process called the “greenhouse effect.” The greenhouse effect is necessary to life on Earth, but relies on a balanced carbon budget.
The carbon in fossil fuels has been sequestered, or stored, underground for millions of years. By removing this sequestered carbon from the earth and releasing it into the atmosphere, Earth’s carbon budget is out of balance. This contributes to temperatures rising faster than organisms can adapt.
How are the scientific method and the engineering method similar?
Both methods identify failure points.
Both methods construct a hypothesis.
Both methods focus on designing things.
Both methods work on finding solutions to problems.
The answer is Both methods work on finding solutions to problems. Because the science is trying to get the right thing and engineering is trying to solve the problem and get right thing and is the same with the science
Explanation:
using distance and can help you identify the position of something
Answer: Length and width
Explanation:
Answer:
Length and width
Explanation:
New Orleans has an altitude at and below sea level, a latitude near the Tropic of Cancer (the equator-zone), is surrounded by water, and has no mountains near by. What would you expect the climate to be?
Answer:
Rainy, sunny and humid.
Explanation:
Materials move across a cell membrane in a process called _______.
Answer:
Diffusion
Explanation:
HELPPPPP
How does the acceleration of an object affect its force?
Which of the materials in the chart originally came from fossil fuels?
Group of answer choices
Acrylic
Cotton
Nylon
Polyester
Viscose
Answer:
Polyester
Acrylic
Nylon
Are all made of fossil fuels.
Can anyone help me out with these questions
Answer:
2. B It is the outermost layer of Earth, composed of solid rock and divided into sections called plates. 3. B The inner core is kept solid by the intense pressure of all the layers above it.
Explanation:
Which type of variable is kept the same throughout an experiment?
Constant variable
Measured variable
Outcome variable
Test variable
Answer:
Constant variable.