Question 1: Hypothesis and Data Collection
pls, help asp. In this activity, you will examine soil composition. Place one cup of your soil sample in a glass. Slowly add water to the glass until the water comes to the top. Stir the soil and water thoroughly.
Part A
Write down your prediction about what will happen when you let the soil sit for one hour.
Answers
Answer:
If we let the jar consisting of 1/3 soil sit for one hour, then the soil height will increase/decrease (select what option you predict).
Explanation:
- The hypothesis typically has a layout of if *indepent variable* is *change*, then the *dependent variable* will *change*.
- Independent variables are variables that change
- Dependent variables are variables that are affected by the change
- Control variables are variables that remain the same, in order for the experiment to be fair
Answer:
The soil particles are heavier so after a while this oil settles down to the bottom of the class remaining almost to clean filter at the top,
Explanation:
Related Questions
(GIVING BRAINLYIST) Which environment has low temperatures and low humidity?
Grassland
Rainforest
Tundra
Wetland
Answers
Answer:
The answer would be tundra.
A rain forest has a lot of humidity because it rains a lot otherwise it wouldn't be called a rain forest.
Grassland has a somewhat high temperature and average humidity enough to keep it green and grassy hence grasslands.
A wetland has a lot of water but low temperatures. Still, humidity is water so wetlands aren't it.
Explanation:
Hope this helped.
A brainliest is always appreciated.
Answer:
Tundra!!
Explanation:
Trust me :D
explain what the net force on an object will be if balanced forces act on it. what will happen to the net force if unbalanced forces act on an object?
Answers
Answer:
A force doesn't act on another force. Forces act on objects.
"Unbalanced force" simply means that the sum of all forces acting on an object - that is, the net force - is not equal to zero.
Explanation:
can sum 1 help please this whole test is worth 30% of my grade
Answers
Answer:
what do we need to help with you got it all right
Explanation:
you have it all right, just focus on learning.
explanation:
An example of the transfer of energy between systems through work is the expansion of gas in a steam engine or car piston. Explain the energy transfer process.
A) Steam engines and pistons both expand as pressure is exerted within them and they go on to accomplish work like moving a train.
B) Energy is converted to work as the expansion of the steam engine occurs and the gas collides with the internal steam engine parts.
C) The rapidly moving particles of the expanding gas is doing work on the piston and energy is transferred from the gas to the piston.
D) The quick moving parts of the expanding steam engine is doing work on the piston and energy is transferred from the engine to the piston.
Answers
Answer:
C is the answer because since it's chemistry particles expanding would most likely be your answer
The energy transfer process is rapidly moving gas particles which are expanding doing work on piston and energy transferred from gas to piston according to first law of thermodynamics.
What is first law of thermodynamics?First law of thermodynamics is related to law of conservation of energy along with distinguishing between transfer of energy.According to this law, total energy of an isolated system remains constant.
It only gets transformed from one form to another.It puts in action the flow of energy across boundaries separating system from its surroundings.
Classic example of first law of thermodynamics is steam engine .It operates in a cyclic fashion with piston moving up and down with each cycle.Steam is fed into cylinder in first half of cycle and for second half of cycle it is allowed to escape. Work done in one complete cycle,is the difference between absorption of heat at high temperature and it's exhaustion at lower temperature.
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Which fossil fuel accounts for 95% of consumption for transportation?
coal
natural gas
nuclear energy
oil
Answers
Answer:
The answer is oil.
Explanation:
Transport remains very dependent on oil: oil-derived fuels account for 95 % of energy consumption in transport.
Could you help me???
Answers
Answer:
First one is by the food we eat, we get fuel to be able to move and do work.
Second one is, the effect of speed on kinetic energy is the faster or slower something is going at, the more or less movement needed.
#1
We get the energy by the foods we take and respiration+ digestion plays key role in transformation
#2
Faster the speed faster the Kinetic energySlower the speed slower the Kinetic energyThis is because KE=1/2mv²
Which of the following best describes chicken noodle soup?
A) compound
B) mixture
C) solution
D) element
Answers
Answer:
B. Mixture
Explanation:
Because there is a mixture of items in the soup
Chicken noodle soup is mixture. Therefore, option B is the correct answer.
Mixtures are the substances composed of two or more forms of matter. Substances in the mixture are not combined chemically. Some properties of mixtures are,
They are impure substance.Classified in to homogenous and heterogenous.They don’t have a fixed composition.Substance in the mixture can be separated by physical methods such as filtration etc.Thus, we can conclude that, chicken noodle soup is a mixture. Therefore, option B is the correct answer.
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(A student is investigating the distribution of charges in insulators. The student will place an aluminum metal can on top of a foam cup and touch the side of the foam cup with a negatively charged rod. The setup for the investigation is shown in the diagram.) What will most likely happen to the electrons when the rod touches the foam cup?
A) The electrons will pass to the foam cup but will remain in a localized, positively charged area on the cup where the rod was placed.
B) The electrons will pass from the foam cup to the aluminum can, and both the foam cup and the aluminum can will become positively charged.
C) The electrons will pass from the foam cup to the aluminum can, and both the foam cup and the aluminum can will become negatively charged.
D) The electrons will pass to the foam cup but will remain in a localized, negatively charged area on the cup where the rod was placed.
Answers
Answer:B) The electrons will pass from the foam cup to the aluminum can, and both the foam cup and the aluminum can will become positively charged.
Explanation: USA TestPrep..am I right?
According to the forces of attraction,the electrons will pass from the foam cup to the aluminum can, and both the foam cup and the aluminum can will become positively charged.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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Help needed ASAP!
Thanks for helping!!:)
Answers
Answer:
I hope this helps you :)
Explanation:
Question 1 - BQuestion 2 - AQuestion 3 - DQuestion 4 - CThe human body is a complex system. Which pair of systems below is most directly required to make the human body move?
muscular and skeletal systems
circulatory and endocrine systems
excretory and respiratory systems
digestive and nervous systems
Answers
need help with these question please help
Answers
What should the student do in her investigation to produce these results?
A) She should place a positively charged rod near the left sphere.
B) She should place a negatively charged rod near the left sphere.
C) She should place two negatively charged rods near each sphere.
D) She should place two positively charged rods near each sphere.
Answers
Answer:
A. To make the negatively charged particles attract to something else than the other sphere, then do A.
Explanation:
According to the forces of attraction,the student should place a negatively charged rod near the left sphere.
What are forces of attraction?Forces of attraction is defined a force by which atoms present in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart from each other . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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Why is it important that humans (and other animals) maintain a relatively constant body temperature?
A. because it is important to keep the water in the body from freezing
B. because chemical and physical processes work best at specific temperatures
C. because if an animal gets too cold its structures are more likely to break
D. because if an animal gets too cold its structures are more likely to melt
SCIENCE 20 POINTS
Answers
Have a good day/night.
Hee Sun drew an electron dot diagram of a silicon atom as shown. S i with 1 dot each above, right, below, left. In addition to changing the symbol to C, how would this diagram compare with an electron dot diagram of a carbon atom (C)? The dot to the left of the symbol would be removed in the diagram for carbon. The same number of dots would appear in the diagram for carbon. There would be two dots above and to the right of the symbol in the diagram for carbon. The single dots would be replaced with two dots on each side of the symbol in the diagram for carbon
(sry if doesnt make sense lol)
Answers
Answer:
B: The same number of dots would appear in the diagram for carbon.
Explanation:
The same number of dots would appear in the electron dot diagram for carbon. Therefore, option B is correct.
What is the lewis electron dot diagram?A lewis electron dot structure of an element or molecule can be used to represent the number of bonds, the bonded atoms, and the lone pairs remaining in the atoms in the molecule.
Lines can be used to show between atoms that are bonded with each other and excess electrons can be represented as dot pairs and denoted in front of the atoms.
The valence electrons of each carbon atom are equal to four from the electronic configuration of the carbon atom. As the valence electrons of each Silicon atom are equal to four from the electronic configuration of the silicon atom.
Both silicon and carbon belong to the same group so they have the same number of valence electrons. Therefore, the same number of dots will appear in the electron dot diagram for carbon.
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What is inertia?
10 points
A: The tendency of an object to continue doing what it is currently doing
B: The opposing force of gravity
C: Another name for unbalanced forces
D: The mass of an object
Answers
Answer:
A
Explanation:
The answer would be A because Inertia is when a property of matter remains unchanged.
Match the correct type of energy transfer that takes place.
Answers
Answer:light bulb electrical energy to light energy alarm clock electrical energy to sound energy riding a bike electrical energy to chemical energy roller coaster electrical energy to mechanical energy
Explanation:
I dont need to explain Bc its rlly easy
Which statement accurately describes renewable energy sources?
They take millions of years to form and should be used responsibly.
They include fossil fuels and hydroelectric power.
They are found in nearly limitless supply.
They provide the majority of the energy for the United States.
Answers
Answer:
The answer would be C. They are found in nearly limitless supply.
Explanation:
The reasoning for this is because unlike nonrenewable energy sources, renewable energy sources as the name suggests, are able to be renewed. Unlike nonrenewable energy sources such as fossil fuels, renewable energy sources such as but not limited to solar, wind, and hydroelectric sources of energy can be harnessed and used at any point of time
Analyze the chart below and then answer the follow question. In 2020, how does the percentage of the population with access to drinking water facilities in North America compare to that of the World?
Question options:
Compared to the average population around the World, North America has a 24% greater percentage of people with access to safely managed drinking water.
Compared to the average population around the World, North America has a 98% greater percentage of people with access to safely managed drinking water.
Compared to the average population around the World, North America has a 16% greater percentage of people with access to safely managed drinking water.
Compared to the average population around the World, North America has a 74% greater percentage of people with access to safely managed drinking water.
Answers
Answer:
I belive it is 16%
Explanation:
I looked at the graph
(GIVING BRAINLYLIST) Describe an adaptation to a plant's physical characteristic and explain how this adaptation helps the plant survive.
Answers
Answer:
Plant adaptations are changes that help a plant species survive in its environment. Aquatic plants that live underwater have leaves with large air pockets inside that allow the plant to absorb oxygen from the water. The leaves of aquatic plants are also very soft to allow the plant to move with the waves.
Explanation:
i searched ggl
What period would this atom be found in?
Period 4
Period 3
Period 2
Not enough information to be able to answer.
Answers
Answer:
To answer, you would need more information.
Explanation:
The Toucan has a long, narrow beak that allows it to reach fruit that is hard to reach for other birds.
Plants, like the Monstera Plant, in the rainforest have long, grooved leaves to drop water to the forest
floor. The excessive water that falls in the rainforest could lead to mold, so the leaves adapted to
have “drip tips” that allow the water to run off of the leaves.
What type of adaptations are these? Compare and contrast the adaptations of the Toucan and
Monstera Plants of the rainforest. Your answer should be 3–4 sentences long. (PLS SAY IF IT IS PHYSICAL CHARATIRISTIC, A BEHAVOR ADOPTATION< OR A LIFE CYCLE ABATION.
Answers
Answer:
The type of adaptations of the Toucan and Monstera Plant are physical adaptions. Both of these adapted physical characteristics help these organisms to survive. The difference in their physical adaptation is that in the Toucan, the physical characteristic helps the Toucan consume nutrients. Meanwhile, the adaptation of the Monstera Plant helps prevent harmful things such as mold.
Explanation:
Answer:The Toucan has a long, narrow beak that allows it to reach fruit that is hard to reach for other birds. Plants, like the Monstera Plant, in the rainforest have long, grooved leaves to drop water to the forest
floor. The excessive water that falls in the rainforest could lead to mold, so the leaves adapted to
have “drip tips” that allow the water to run off of the leaves.
Explanation: The Toucan has a long, narrow beak that allows it to reach fruit that is hard to reach for other birds. Plants, like the Monstera Plant, in the rainforest have long, grooved leaves to drop water to the forest
floor. The excessive water that falls in the rainforest could lead to mold, so the leaves adapted to
have “drip tips” that allow the water to run off of the leaves.
help me my grades are suffering
Answers
Answer:
1. Sugar water
2. Sand and salt
3. Sand and iron fillings
4. Sand and gravel
5. Gravel and rocks
6. Sand and wood shavings
Hope this helps!
How is the life cycle of a star similar to that of a human?
Answers
Answer: They both have stages where they are born and die which is in the main sequence and supernova and in a human they are born in a womb and die of old age.
Explanation:
Answer:
The most common similarity is that they live and die
Explanation:
Can you please help me
A student is given a sample of pure water, a sample of salt water and a sample of muddy water.
a. Which sample(s) is classified as a compound? How do you know?
b. Which sample(s) are classified as mixtures? How do you know?
c. Classify the mixture(s) as heterogeneous or homogeneous. Justify your answer.
Answers
Answer:
aa. Which sample(s) is classified as a compound? How do you know?
Please
help thanks !!:)
I APPRECIATE THE HELP!!
I will give BRAINLIEST!!
Answers
Answer:
1. B
2. D
3. B
4. D
Explanation:
Hope that helps
HElphow can an electrical current produce a magnetic field, and how can a magnetic field produce an electrical current? explain
Answers
Answer:
As Ampere suggested, a magnetic field is produced whenever an electrical charge is in motion. The spinning and orbiting of the nucleus of an atom produces a magnetic field as does electrical current flowing through a wire. The direction of the spin and orbit determine the direction of the magnetic field.
Explanation:
Answer:
What is Electric current?
An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge past a region.
What is a Magnetic Field?
A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetized materials.
How can an electrical current produce a magnetic field?
These circles stretch out along the wire, forming cylinders. If an electric current is passed through a long coil of wire (a solenoid ) a magnetic field is produced which is the same shape as that of a bar magnet.
How can a magnetic field produce an electrical current?
Moving magnetic fields pull and push electrons. ... Moving a magnet around a coil of wire, or moving a coil of wire around a magnet, pushes the electrons in the wire and creates an electrical current.
Describe the special water feature found in Passamaquoddy Bay
Answers
Answer:The Old Sow whirlpool is located off the southwestern shore of Deer Island, New Brunswick between the island and Eastport, Maine. The whirlpool is caused by variations in local bathymetry combined with the extreme tidal range of the Western Passage where waters exchange between Passamaquoddy Bay and the Bay of Fundy.
Explanation:
The energy from sunlight splits the water molecules into ____________ and _________ gas.
a. chlorophyll, oxygen
b. chlorophyll, hydrogen
c. hydrogen, oxygen
d. oxygen, carbon dioxide
Answers
Answer:
I hope this is correct...
Explanation:
I think the answer is
C. Hydrogen, Oxygen
Hope this helps :)
What would most likely happen if the moon was closer to Earth (take tides into consideration)?
Answers
Answer:
Low tides would be lower and high tides would be higher and any low lying coastline would be flooded
Explanation:
Also...
If the moon got about 20 times closer it would make a gravitational force 400 times greater than what we are used to now
The mechanical action of friction causes: chemical energy heat energy potential energy
Answers
Answer:
Heat Energy
Explanation: