Answer:The Paleozoic Era, a term that means "old animal life," is characterized by extinct animal groups such as trilobites. The Mesozoic Era, which means "middle animal life," is characterized by a different assemblage of fossils, including ammonites and dinosaurs
Explanation:
Answer:
Many different species of dinosaurs lived in the Mesozoic, but they all died off in the Paleozoic
Explanation:
it is C
CHEMISTRY OF GLOW STICKS
THE 1ST SCREENSHOT HAS MY OBSERVATIONS.
(and some of the instructions)
THE OBSERVATIONS ARE NEEDED TO ANSWER THE QUESTIONS ON THE OTHER SCREENSHOTS.
THE 1ST SCREENSHOT IS NOT A QUESTION.
Thank You!
: )
(7th Grade)
Answer:
sorry
Explanation:
But you are going on the right track
A dolphin catches and eats small fish.
Which type of organism is described in this scenario?
consumer
decomposer
parasite
producer
Answer:
The answer is *consumer*
Which statement describes what is gained or lost during radioactive decay?
Atoms gain other atoms.
Elements take in energy.
Atoms lose smaller particles.
Elements gain smaller particles.
Answer: The correct statement is: Atoms lose smaller particles during radioactive decay.
Explanation:
Radioactive decay is a process where unstable atomic nuclei lose energy by emitting radiation in the form of particles or electromagnetic waves. As a result of this process, the unstable atoms transform into a different element or isotope. During the decay, the atoms lose smaller particles such as alpha particles, beta particles, or gamma rays. This loss of particles changes the number of protons and neutrons in the nucleus, which leads to the formation of a new element.
statement describes what is gained or lost during radioactive decay: atoms lose smaller particles. That is the third option, as during radioactive decay, the nucleus of an atom can lose subatomic particles, such as alpha or beta particles, which results in the transformation of the original atom into a new atom or a different isotope of the same element.
What is radioactive decay?Radioactive decay is a process by which the nucleus of an unstable atom loses energy by emitting subatomic particles, such as alpha or beta particles, or electromagnetic radiation, such as gamma rays. This loss of energy can result in the transformation of the original atom into a new atom or a different isotope of the same element.
Hence, the statement describes what is gained or lost during radioactive decay: atoms lose smaller particles, which is the third option.
Learn more about radioactive decay here.
https://brainly.com/question/17019467
#SPJ5
A water molecule takes a journey that includes a cloud, mountain, atmosphere, lake, and groundwater. Write a scientific explanation about the directions the water molecule would move and what causes it to move through the cycle. (Must use CER!) (Finish it immediately!)
Answer:
Claim: A water molecule moves through the water cycle in a continuous journey that involves changes in state and location.
Evidence: The journey of a water molecule begins when it evaporates from a body of water, such as a lake or the ocean, due to the energy from the sun. The water molecule rises into the atmosphere and joins other water molecules to form a cloud. As the cloud moves, it may pass over a mountain and cool, causing the water molecules to condense into liquid or solid form and fall as precipitation. Some of the precipitation may fall into a lake or river, where it can flow downstream and eventually enter the groundwater system. The water in the groundwater system may eventually resurface in a lake or river, or it may be extracted from a well for human use.
Reasoning: The movement of a water molecule through the water cycle is driven by a combination of physical and chemical processes, including evaporation, condensation, precipitation, and infiltration. The sun provides the energy that drives the cycle, causing water to evaporate and rise into the atmosphere. As the water molecules cool, they may condense into clouds and eventually fall as precipitation. The movement of water through the cycle is also influenced by factors such as temperature, pressure, and gravity. For example, water will flow downhill due to gravity, which can cause it to move through the groundwater system and eventually resurface in a lake or river. Overall, the water cycle is a complex and continuous journey that is essential for maintaining the Earth's water supply and supporting life.
Explanation:
The images below show two atoms. Using the document and a periodic table, determine the following:
Please answer all parts for full credit! (TOTAL POINTS = 14 pts)
a) What elements are depicted? (2pts)
b) How is each element classified (metal, nonmetal, metalloid)? (2pts)
c) What type of bond would form between these two atoms? (2pts)
d) What would the compound formed between these atoms be named? (4pts)
e) What would the formula be? (4pts)
Answer:
d
Explanation:
a) Atom 1 has 35 protons and 45 neutrons, which means it is the element bromine (Br). Atom 2 has 12 protons and 12 neutrons, which means it is the element magnesium (Mg).
What is a metalloid?A metalloid is an element that acquires both metal and nonmetal properties. Metalloids have some characteristics of metals, such as being good conductors of electricity, while also having some nonmetallic properties such as being brittle and lacking the ability to be hammered into shape. They are located along the "staircase" on the periodic table, between the metals and nonmetals, and include elements such as boron, silicon, germanium, arsenic, antimony, and tellurium. Metalloids are important in various applications such as semiconductor industry, in which silicon is the most widely used metalloid for the production of computer chips and solar cells.
b) Bromine (Br) is a nonmetal and magnesium (Mg) is a metal.
c) Magnesium (Mg) is a metal and bromine (Br) is a nonmetal, so they would form an ionic bond.
d) The compound formed between magnesium (Mg) and bromine (Br) would be named magnesium bromide.
e) The formula for magnesium bromide is MgBr2, since magnesium (Mg) has a +2 charge and bromine (Br) has a -1 charge.
To know more about periodic table, visit:
https://brainly.com/question/11155928
#SPJ1
The images show two metamorphic rock samples.
Left: light colored rock with coarse texture. Right: red and white rock with rounded grains and coarse texture.
Which statement accurately describes these rocks?
Both rocks are non-foliated.
Neither rock has randomly arranged grains.
Both rocks formed at Earth’s surface.
Neither rock formed through extreme heat or pressure.
Answer:
Explanation:
anserw a
oops I meant a is the answer
.............................
PLEASE HELP ILL MARK U BRAINLIEST!
A _________________________________ is a solid, naturally formed substance that always has the same
composition and the same properties
Answer: A rock
I don't know what to put here.
A plant makes glucose during photosynthesis. Glucose consists of the elements carbon, hydrogen, and oxygen. What is the source of the elements for the glucose that the plant makes? Construct an explanation.
Answer:
The source of the elements that make up glucose in a plant is primarily carbon dioxide (CO2) from the air, water (H2O) from the soil through the roots, and energy from sunlight.
During photosynthesis, chlorophyll in the plant's leaves absorbs light energy and uses it to convert carbon dioxide and water into glucose and oxygen. This process involves a series of complex chemical reactions, collectively called the Calvin cycle, that occur within specialized structures in plant cells called chloroplasts.
In the first stage of the Calvin cycle, carbon dioxide molecules in the air are captured by an enzyme called rubisco and combined with a molecule called ribulose bisphosphate (RuBP). This results in the formation of an unstable molecule that quickly breaks down into two molecules of a three-carbon compound called 3-phosphoglycerate (3PG).
Next, the energy from sunlight is used to convert the 3PG molecules into a different three-carbon compound called glyceraldehyde 3-phosphate (G3P). Some of the G3P molecules are used to make glucose, while others are used to regenerate the original RuBP molecule that can be used in the next cycle.
Finally, the glucose molecules are transported throughout the plant and used as a source of energy for cellular respiration, which releases the stored energy in the glucose molecules to power various cellular processes in the plant. The oxygen produced during photosynthesis is released into the air as a byproduct of the process.
In summary, the source of the elements for the glucose that the plant makes is carbon dioxide from the air, water from the soil, and energy from sunlight.
Explanation:
Answer:
The source of the elements that make up glucose in a plant is primarily carbon dioxide (CO2) from the air, water (H2O) from the soil through the roots, and energy from sunlight.
During photosynthesis, chlorophyll in the plant's leaves absorbs light energy and uses it to convert carbon dioxide and water into glucose and oxygen. This process involves a series of complex chemical reactions, collectively called the Calvin cycle, that occur within specialized structures in plant cells called chloroplasts.
In the first stage of the Calvin cycle, carbon dioxide molecules in the air are captured by an enzyme called rubisco and combined with a molecule called ribulose bisphosphate (RuBP). This results in the formation of an unstable molecule that quickly breaks down into two molecules of a three-carbon compound called 3-phosphoglycerate (3PG).
Next, the energy from sunlight is used to convert the 3PG molecules into a different three-carbon compound called glyceraldehyde 3-phosphate (G3P). Some of the G3P molecules are used to make glucose, while others are used to regenerate the original RuBP molecule that can be used in the next cycle.
Finally, the glucose molecules are transported throughout the plant and used as a source of energy for cellular respiration, which releases the stored energy in the glucose molecules to power various cellular processes in the plant. The oxygen produced during photosynthesis is released into the air as a byproduct of the process.
In summary, the source of the elements for the glucose that the plant makes is carbon dioxide from the air, water from the soil, and energy from sunlight
Explanation:
I NEED AN ANSWER ASAP/NOW
Answer:
wow, okay we are going to look for it then I will send it to you
Which fossils are formed by sediments and found in sedimentary rock?
a mold of a fish skeleton and a cast of a clamshell
a cast of a clamshell and a frozen animal
a frozen animal and a piece of petrified wood
a piece of petrified wood and a preserved insect
Answer:
The answer is Choice "A"
Explanation:
Some people hope that one day people will walk, or possibly even live, on Mars. What might astronauts need on Mars in order to survive? List at least three things.
Answer:
Self-sustaining water, food and oxygen
Answer: self-sustaining water, food, and oxygen
Explanation:
Robert is thinking about buying a new refrigerator. His old refrigerator runs at about 43% efficiency. Which most likely accounts for the remaining 57% of the energy?
A: It is used up by the light in the refrigerator.
B: It is released to the surroundings as heat
C: It is converted into mechanical energy.
D: It stored as a form of potential energy.
Answer:
D it stores as a firm of potential energy
Will give 100 points!
An earthquake has a high magnitude but a low intensity. Which statement best explains this?
A. Magnitude measures the energy released by the earthquake, while intensity measures the amount of damage.
B. Magnitude measures the duration of the earthquake, while intensity measures the amount of damage.
C. Magnitude measures the duration of the earthquake, while intensity measures the energy released by the earthquake.
D. Magnitude measures the energy released by the earthquake, while intensity measures its duration.
The National Seismic Hazard Map classified one location as having the “highest hazard” and another location as having the “lowest hazard.” Based on this classification, which conclusion can you draw between the "highest hazard" and "lowest hazard" locations?
A. "Highest hazard" locations are better prepared for an earthquake than the "lowest hazard" locations.
B. There will never be an earthquake in the "lowest hazard" location in the future.
C. There will definitely be an earthquake in the "highest hazard" location.
D. There is more likely to be an earthquake in a "highest hazard" location than in a "lowest hazard" location.
How are P waves different from S waves?
A. P waves move under Earth’s surface, and S waves move along Earth’s surface.
B. P waves cause damage, and S waves do not cause damage.
C. P waves travel slowly, and S waves travel quickly.
D. P waves push and pull in the same direction as the wave, and S waves move up and down.
What does a seismograph record?
A. the distance from the epicenter of an earthquake
B. the vibrations produced by an earthquake
C. the amount of damage that results from an earthquake
D. the total amount of energy released by an earthquake
1. Magnitude measures the energy released by the earthquake, while intensity measures its duration. The correct option is A.
2. The conclusion you can draw between the two conditions is that there is more likely to be an earthquake in a "highest hazard" location than in a "lowest hazard" location and is denoted as option A.
3. P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.
4. Seismographs are instruments used to record the motion of the ground during an earthquake. They are installed in the ground throughout the world and operated as part of a seismographic network.
Choose 1 type of electromagnetic wave. Write 3 sentences about that type of wave. Describe the wave's frequency and wavelength as well as what the wave is used for in the real world.
Answer: Ultraviolet
Explanation:
The video attached will help you remember the Electromagnetic Spectrum; just search it.
Ultraviolet has a higher frequency than visible light but a lower frequency then x-rays. Ultraviolet has a wavelength range of 100-400 nm.Ultraviolet can be used in detecting forged bank notes.Answer: Radio waves
Explanation :
There are seven types of electromagnetic waves are present in nature .
Radio waves , microwaves , infrared waves , visible light , ultraviolet waves , X -rays , Gamma rays .
IN GIVEN QUESTION ONLY ASKED ABOUT ONE ELECTROMAGNETIC WAVE, SO I WILL BE EXPLAINED ABOUT RADIO WAVE .
Radio waves :
1) Radio waves are the electromagnetic wave with the longest wavelengths.
2)These waves are a type of electromagnetic radiation with frequencies ranging from 300 GHz to 3kHz.
3) The wavelength is 1mm at 300 GHz and 100 km at 3kHz .
Radio waves are used for communication.
How do you think scientific discoveries regarding synthetic medicines like aspirin have impacted the pharmaceutical industry?
(thanks!)
Answer: The discoveries of synthetic medicine have gave the pharmaceutical industry more opportunities to more efficiently assist others. The synthetic medications are more effective and could be more cost efficient for the people taking them and the manufacturers and thus also gives the pharmaceutical industry more relevance in terms of the medical industry and the scientific world.
Explanation: n-a
Chemistry of Glow Sticks
(screenshots)
Thanks!
(btw, for me, it 12:10 AM)
sc
Answer:
Explanation:
what is the question?
PLEASE HELP
My Question: How do the number of atoms at the start of a chemical reaction compare to the number of atoms at the end of the reaction? (HINT: Use the Law of Conservation of Mass)
-Please answer in 2-4 sentences.
Explanation:
As it is a fact that "The law of conservation of matter(mass) says that matter cannot be created or destroyed". In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the
products.
Answer:
Explanation:
According to the Law of Conservation of Mass, the number of atoms at the start of a chemical reaction is equal to the number of atoms at the end of the reaction. This is because, in a chemical reaction, the total mass of the reactants must be equal to the total mass of the products. Thus, while the way atoms are bonded together may change, the number of atoms of each element remains constant.
the total number of atoms of each element before and after the reaction remains the same. This is because atoms cannot be created or destroyed in a chemical reaction, they can only be rearranged
PLEASE HELP EASY will give brainliest -does anyone know how to do these
If you know some of them please tell me and list the number row you did! Thanks <33
Explanation:
Less then 33
This isn't the full question
#Brainac
Write a scientific argument that addresses the question: Which suspect is most likely to have made the hydrofluoric acid? First, state your claim. Then, use evidence to support your claim. For each piece of evidence you use, explain how the evidence supports your claim.
THE SUSPECTS ARE EITHER PAT OR TRACY. I'm pretty sure it's Pat but I need a clear explanation to why it is her who created the hydrofluoric acid!
Answer:
Pat is most likely to have made the hydrofluoric acid. My first piece of evidence is that the chemical supply company delivered sulfuric acid and calcium fluoride to Pat’s house However, these substances were not found at Pat’s house. This could mean that Pat used these substances in a chemical reaction. This evidence supports my claim because a chemical reaction between sulfuric acid and calcium fluoride could cause the atoms to rearrange to form hydrofluoric acid as one of the products. This is because sulfuric acid contains hydrogen atoms, and calcium fluoride contains fluorine atoms, which are the two types of atoms that repeat to make up hydrofluoric acid.
My next piece of evidence is that the police found calcium sulfate at Pat’s house. This evidence supports my claim because if Pat mixed the sulfuric acid and the calcium fluoride to make hydrofluoric acid, then the other product of this reaction could be calcium sulfate. This is because only the hydrogen and fluorine atoms would rearrange to form hydrofluoric acid. The rest of the atoms of the reactants would have to rearrange to form another substance. Calcium sulfate is probably the other product that would form because its atom group contains all the atoms that did not rearrange to form hydrofluoric acid. This evidence suggests that Pat mixed sulfuric acid and calcium fluoride to make the hydro.. whatever.
What's the problem with the chemical equation shown?
A. There's a missing oxygen in the product.
B. There's a missing hydrogen in the reactants.
C. There's an additional oxygen in the product.
D. There's an additional hydrogen in the reactants.
How are S waves and surface waves similar?
Both arrive after P waves.
Both compress the ground.
Both travel through liquids.
Both produce minimal ground motion.
If you are leading a team to clean an oil spill in rough waters, which of the following methods would be most effective to clean the oil?
Install booms made from, or with, sorbent materials around the oil spill.
Install hard booms around the oil spill.
Coat the surface of the water with a sorbent material.
Wait until the water calms down and then install booms to contain the spill.
Answer:Install booms made from, or with, sorbent materials around the oil spill.
Explanation:Dispersants and booms and skimmers are the most frequently used methods to clean up ocean oil spills. All methods have advantages and disadvantages. The effectiveness depends on the situation – the amount and type of oil, the ocean currents and tides and the weather.