Answer:
Observations of the sky allowed explorers to mark the passage of time both in hours and through the months of the year. Early astronomers also realized that the night sky does not look the same from different places on the Earth.
Which of the following is a balanced chemical equation?
Answer:
equation number 3 is balanced.
hope it helps ☺️!
A student who was training for a cross-country race jogged for 1.0 hour and covered a distance of 1.5 kilometers. How much farther will the student travel if he jogs for one more hour?
Answer:
He would travel 3 kilometers.
Explanation:
Since he had already covered 1.5 kilometers in the time of 1 hour that means if he jogged for 1 more hour assuming he is going at the same pace he would've jogged 1.5 kilometers again and when you add that to the 1.5 kilometers he started with it would add up to 3 kilometers.
HELPPPP ASAPPPPPP WILL MARK BRAINLIST
brainstorm 5 ways you can settle an argument more effectively then restoring to a dual
here it wasnt letting my upload my answer so i screenshotted
PLS HELP
What is the correct order for this food chain?
A) grass, lion, bacteria
B) antelope, lion, grass
С) antelope, bacteria, grass
D) grass, antelope, lion
Answer:
Creo que es D) grass, antelope, lion
Explanation:
El antílope se alimenta de hierba y el león del antílope.
In an ecosystem, the correct order for the food chain is grass, antelope, lion.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.There are different types of ecosystems present.
Learn more about ecosystem,here:
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12. Which of the following is true about the Earth's crust?
1) It floats above a layer of flowing hot magma.
2) It is the thickest layer of the Earth.
3) It is the hottest layer of the Earth.
4) It mostly consists of iron.
Answer:
It should be A. Sorry if incorrect. Hope this helps. :)
Answer:
4)I consists of mostly iron
Explanation:
This is because 1) is not correct, 2) is not correct, and 3 is not correct.
At which pesan pressure lowest The image shows a representation of mountains of various heights, numbered 1, 2, and 3 The plami tabeled number 4 OOOO
1 is the lowest pressure.........
Please help help ASAP Please help It’s do in a 1 hour What conclusion can you draw about the relationship between physical activity and a
person's pulse rate?
Answer:
During exercise, heart rate can rise dramatically, from a resting rate of 60–80 beats per minute to a maximum rate of about 200 for a young adult. While you are running, blood flow is diverted toward tissues that need it most. For example, muscles in the arteries in your legs relax to allow more blood flow.
Explanation:
Answer:
the more physical activity you do the higher your heart rate rises
Explanation:
me every time I walk more then two steps honestly
“The allele that can only be seen when two copies of it are present”
A.Heredity
B.Dominant
C.Recessive
Answer:
Recessive
Explanation:
I don't know how to give an explanation but I learned this a few years back and it stuck with me.
In the Periodic Table, the vertical columns that extend down the Periodic Table are called
A. periods.
B. Groups.
C: Classes
D: Rows
Answer:
b
Explanation:
Which of the following factors would reduce the yield of a reaction?
A. The reaction occurs very quickly.
B. The reactants form additional unexpected products.
C. The reaction requires a large quantity of heat.
D. The reaction produces a large quantity of heat.
Answer:
B. The reactants form additional unexpected products.
Explanation:
How many bonds does silicon tetrachloride, SiCl4 have?
During a lab you measure the height of your graduated cylinder as 5.75 inches. You later read that you were asked to record it in meters. Convert your measurement into meters in order to get full credit on your lab. Express your answer in scientific notation.
Answer:
1.4605 x [tex]10^{-1}[/tex] meter.
Explanation:
According to the standard method of conversion of units:
1 inch = 0.0254 meter
Therefore, 5.75 inches would be:
5.75 x 0.0254
= 0.14605 meter
0.14605 meter in scientific notation would be 1.4605 x [tex]10^{-1}[/tex] meter.
Hence, the 5.75 inches height would be 1.4605 x [tex]10^{-1}[/tex] meter.
In what way does the shape of a molecule affect how the molecule is
involved with living systems?
OA. It determines the weight of the molecule.
OB. It determines how the molecule functions.
O C. It determines oxidation states present in the molecule.
OD. It determines what elements are in the molecule.
Answer:
B
Explanation:
I'm not 100% sure, but B seems like the most likely answer because the shape of a molecule usually is a major factor in how molecules interact with each other.
I hope that helps.
As we approach fall, the trees begin to drop their leaves. If a leaf, with a mass of 0.00006 kg, drops 3.66 meters from the top of a tree and the acceleration due to gravity is 9.81 m/s2. Calculate the force at which the leaf will hit the ground.
(F = m * a)
GIVING BRAINIEST FIVE STARS AND HEART!
Please define the following term in your own words!
law of conservation of matter
Answer:
Matter cannot be created destroyed
Explanation
Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.
What do you think causes a lunar eclipse? (Use your knowledge of solar eclipses and feel free to run the Gizmo to help you.)
Moon reflects the light frim the sun, thats why we are able to see it and it shines in the night. But, we know that Earth revolves around Sun and Moon revolves around Earth. During this revolution, Earth and Moon comes in a position when Earth is in the middle of the Moon and Sun. So, it blocks the light of Sun frim reaching Moon. Hence, we see no reflection and it causes Lunar eclipse.
Answer:
A total lunar eclipse occurs when the moon and the sun are on exact opposite sides of Earth. Although the moon is in Earth's shadow, some sunlight reaches the moon. The sunlight passes through Earth's atmosphere, which causes Earth's atmosphere to filter out most of the blue light.
Explanation:
What causes an earthquake to happen?
A. O Rocks deform slowly as a result of physical stress.
B. O Rocks along a fault move suddenly and release energy.
C. Large amounts of rock suddenly shift downward when large holes form
underground
D. O Energy is transferred to rock layers from convection currents in the oceans
and the atmosphere.
Which of the following
happens when a substance
melts?
When a substance melts, the solid gains heat, and the motion of the particles increases (particles move faster in liquid form than in solid form).
How many moles of argon are in 1.806 x 1024 atoms of argon?
O A. 0.3 moles
O B. 1.0 mole
O C. 3.0 moles
D. 30 moles
Answer:
3 mol Ar.
Explanation:
Divide 1.806 x 10²⁴ atoms of Ar with Avogadro's Number to find the solution.
The number of moles of argon is 1.806 x 1024 atoms of argon is option C. 3.0 moles.
How many moles of argon is in 1.806 x 1024 atoms of argon?By dividing 1.806 x 10²⁴ atoms of Ar with Avogadro's number we can get the answer.Avogadro's number is the number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023.The Avogadro’s number represents the number of atoms that exist in twelve grams of carbon-12. This number represents a quantity without an associated physical dimension, so it is considered a pure number to describe a physical characteristic without dimension or explicit unit of expression.To learn more about 1.806 x 1024 atoms of argon, refer to: https://brainly.com/question/2872447
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Dissolved: Will give brainliest
Answer:
im 99% sure it's 175.
Explanation:
keep trucking, i know school is hard but you're doing amazing
someone help with this pls
Answer:
12 B
13
0.00100176
Explanation:
Please help! Its for chem
Answer:
can you give me more info
Explanation:
i think it d or c
i got charts to help
aluminum hydroxide + sodium nitrate reaction type
Answer:
.
Explanation:
Which statement best describes the position of a coastal area during a low
tide?
A. It is on a side of Earth that is perpendicular to the Moon.
B. It is on the part of Earth that is experiencing nighttime.
C. It is on the part of Earth that is experiencing daylight.
D. It is on a side of Earth that faces the Moon directly.
Answer:
A is the correct answer
Explanation:
Moon pulls the ocean upwards causing tides
The position of a coastal area during a low tide is: it is on a side of Earth that is perpendicular to the Moon.
What happens during low tide?Whenever the absolute bottom, or the box, arrives at a coast, the coast encounters a low tide. Envision the sea is molded like a ball pointing at the moon. The football's sharp closures address the pieces of the Earth encountering elevated tide and the ball's level sides are the pieces of the earth encountering low tide.
Thus, option A is correct.
Find more information about Low tide here:
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An object that is already moving can . . .
An ion is when an atom or molecule has an electric change True or False
Answer:True
Explanation:
What is the process called when a solid becomes a liquid?
melting
freezing
condensing
boiling
the answer is melting
Answer: melting :)
Explanation:
Which statement is true about endothermic and exothermic reactions
Answer:
The products have less potential energy than the reactants in an exothermic reaction.
Explanation:
took the test
The elements mercury and bromine are both liquids at room temperature, but mercury is considered a metal, and bromine is considered a non-metal. How can that be? Explain using properties you know of.
Answer:
At room temperature, mercury and bromine are of fluid consistency, it is because their melting or melting temperature is very low, so low that it reaches room temperature.
Compared to mercury and other metals, the more traditional metals have much higher melting temperatures.
On the other hand, bromine is not a metal, since it does not have the ability to oxidize with the presence of oxygen and also does not give up electrons.
Explanation:
Mercury in the periodic table is Hg, and bromine is Br
?
How many protons, neutrons, and electrons does the following isotope have:
10 protons, 2 neutrons, 4 electrons
4 protons, 6 neutrons, 10 electrons
O
6
protons, 4 neutrons, 0 electrons
4 protons, 2 neutrons, 4 electrons
Answer:
D. 4 protons 2 neutrons and 4 electrons