Answer:
aa. Which sample(s) is classified as a compound? How do you know?
Match the correct type of energy transfer that takes place.
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
What is the life span of our sun?
What is the life span of stars larger than the sun?
Answer:
What is the life span of our sun?
Stars like our Sun burn for about nine or 10 billion years. So our Sun is about halfway through its life. But don't worry. It still has about 5,000,000,000—five billion—years to go.
What is the life span of stars larger than the sun?
Stars live different lengths of time, depending on how big they are. A star like our sun lives for about 10 billion years, while a star which weighs 20 times as much lives only 10 million years, about a thousandth as long.
Explanation:
The hydrogen gets combined with the carbon dioxide, making _________. *
a. chlorophyll
b. starch
c. glucose
d. xylem
Answer:
glucose
Explanation:
help me my grades are suffering
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!
According to cell theory, all organisms are made of one or more cells. Which is also a statement of the cell theory?
a.
All cells perform specialized functions.
b.
All cells can generate new organisms.
c.
All cells must come from preexisting cells.
d.
All cells need other cells in order to survive.
Can someone answer the questions from the documents?
Answer:
no,because the documents tells us about that subject and explain about information
Why is sand NOT considered a mineral?
Answbecause it is a small rocks
Explanation:
Answer:
Sand is not a mineral because it is made up of different kinds of minerals like quarts. Sand is in fact a sediment, not a mineral.
Explanation:
Hope that helps!
Karissa is conducting an experiment on the amount of salt that dissolves in water at different temperatures. She repeats her tests several times using the same procedure.
What can Karissa do to further increase confidence in the results of her experiment?
1) have another scientist run the same exact procedure in her lab.
2) include several other liquids for comparison.
3) calculate the average amount of salt that dissolves to summarize findings.
4) make sure the experiment follows a specific procedure that allows other scientists to produce the same findings.
Answer:
I think its 3
Explanation:
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.
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:
How is the life cycle of a star similar to that of a human?
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:
I need lots of help owo
They need other brands of cleaners to try it out with, and they need the same type of stain and same amount of stain on each same brand and same type of clothing.
How long will an object remain at rest, according to Newton's first law of motion?
10 points
A: It can't rest
B: Until noon
C: Until an unbalanced force occurs
D: As long as there are unbalanced forces acting on it
Please Help I need it!!
(The picture shows a child sliding down a plastic slide.)
Which statement best describes why the child's hair stands up after he slides down the slide?
A) Friction caused a transfer of electrons between the slide and the child, making each of his like-charged hairs repel each other.
B) Energy was transferred from the slide to the child through induction, causing the child's hair to become charged and stand up.
C) Energy was transferred from the child to the slide through conduction, causing the child's hair to become charged and stand up.
D) Friction caused a transfer of electrons between the slide and the child, making his like-charged hairs attract the air through induction.
Answer:
Your answer is A: Friction caused a transfer of electrons between the slide and the child, making each of his like-charged hairs repel each other.
Explanation:
The most likely explanation for why the child's hair stands up after sliding down the slide is due to the transfer of electrons caused by friction between the slide and the child's hair. Hence, option A is correct.
Why does the child's hair stand up after sliding down the slide?When the child slides down the slide, there is friction between the slide and the child's hair. This friction causes a transfer of electrons between the two surfaces, with electrons moving from one surface to the other.
This transfer of electrons can result in the child's hair becoming negatively charged, which causes the individual hairs to repel each other, leading to the hair standing up.
Therefore, the correct answer is A Friction caused a transfer of electrons between the slide and the child, making each of his like-charged hairs repel each other.
Learn more about friction, here:
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(GIVING BRAINLYIST) Which environment has low temperatures and low humidity?
Grassland
Rainforest
Tundra
Wetland
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
Help needed ASAP!
Thanks for helping!!:)
Answer:
I hope this helps you :)
Explanation:
Question 1 - BQuestion 2 - AQuestion 3 - DQuestion 4 - C(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.
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.
Learn more about forces of attraction,here:
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What would most likely happen if the moon was closer to Earth (take tides into consideration)?
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
Which type of data would be considered qualitative data? diameter measured distance travelled density calculated discoloration amount
Answer:
Explanation:
Qualitative data is descriptive information that cannot be measured in numbers. So among the choices, only discoloration amount is descriptive and cannot be measured.
The type of data which will be considered as qualitative data is discoloration amount.
What is qualitative data?Qualitative data is that data which depends on the quality not in the quantity of any object.
Diameter, travelled distance and density are the quantitative data means they all depends on the quantity and measurement. Whereas the discoloration amount is the qualitative data as it is not measurable and not depends on the quantity.
Hence correct answer is discoloration amount.
To know more about Qualitative data, visit the below link:
https://brainly.com/question/4729045
Could you help me???
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
Describe a young star.
Please
help thanks !!:)
I APPRECIATE THE HELP!!
I will give BRAINLIEST!!
Answer:
1. B
2. D
3. B
4. D
Explanation:
Hope that helps
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?
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:
Help needed ASAP!
Thanks for the help!!:)
Answer:
Q1=D
Q2=B
Q3=A
Q4=C
Explanation:
Which of the following statements is NOT true of the Lewis Dot Diagrams?
how does a flashlight create motion
(not from google please, or at least change a lil bit)
(Science)
Answer:
Electricity in the flashlight is moved through wires to a bunch of different places. Then it can change forms. When in a flashlight the electrical energy will become light energy and thermal energy inside bulb.
Explanation:
How did I do?
An electron in a hydrogen atom moves from level 3 to level1. In a second hydrogen atom, an electron drops from level 2 to 1 . Which statement describes the most likely result
Answer:
In a second hydrogen atom, an electron drops from level 2 to 1 .
(GIVING BRAINLYLIST) Describe an adaptation to a plant's physical characteristic and explain how this adaptation helps the plant survive.
Answer:
Because tree's have a type of wax coating that helps the tree's survive and adapt to a type of climate zone.
Explanation:
Why does a large mass star will have a different life cycle than a small mass star?
Answer:
is on the explantion.
Explanation:
The larger its mass, the shorter its life cycle. A star's mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust from which it was born. Over time, the hydrogen gas in the nebula is pulled together by gravity and it begins to spin.
The 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
Why can't a volume of water be compressed or expanded like a volume of air in a closed syringe system?
Answer:
It is all about pressure. When you plug upon the nozzle, there is no way for the pressure of the fluid to rise above a certain value, so pushing in is opposed by the fluid pushing back on your finger, it gets hard! However, if you open the valve and allow fluid to squeeze out, then the pressure can be relieved a bit and that allows you to keep the piston moving down. That is applying an unbalanced force that allows the fluid to accelerate from zero velocity inside the barrel to some higher velocity through the nozzle.
Explanation: