Answer:
Mendeleev must have felt that the validity of the periodic law itself might be questioned by the existence of this new element.
Explanation:
A student sorted six elements.He places iron, silver, and sodium in group A. He placed neon,oxygen,and nitrogen in group B.Name one other element that belongs in groups B
Answer:
Any other metal could be in A, such as aluminum. Any other nonmetal could be in group B, such as fluorine
Students are investigating the rocks with fossil markings that are found in an area that was once covered by a lake. The rocks they are observing are MOST likely —
igneous
metamorphic
sedimentary
thermic
Answer:
sedimentary rock
Explanation:
The rocks they are observing are MOST likely sedimentary. The correct option is C.
What is sedimentary rock?Sedimentary rock is one of the three main types of rock formed on Earth (the others being igneous and metamorphic rocks). It is formed by the accumulation and solidification of sediment, which is any material that is transported by wind, water, or ice, and eventually deposited on the Earth's surface. This can include particles of minerals, rocks, and organic matter.
Over time, these sediments are buried and subjected to pressure and compaction, which causes them to become more tightly packed and solidified. The weight of the overlying layers can also cause the sediment to undergo cementation, where minerals dissolved in water between the particles precipitate and bind them together. As the sediment becomes more compacted and cemented, it eventually becomes a solid rock.
Sedimentary rocks are often characterized by their visible layers or strata, which can contain fossils and provide a record of past environmental conditions. They are also important sources of natural resources, such as coal, oil, and natural gas, as well as many of the minerals and building materials used in construction. Some common examples of sedimentary rocks include sandstone, shale, and limestone.
Here in the question,
Sedimentary rocks are formed from the accumulation and consolidation of sediment, often containing fossils. The fact that the area was once covered by a lake supports the idea that the rocks would have been formed from sediment deposited in the lake. Therefore, option C is the most likely and correct choice.
Igneous rocks are formed from molten magma and do not typically contain fossils. Therefore, option A is not correct.
Metamorphic rocks are formed from preexisting rocks that are altered by heat and pressure. They also typically do not contain fossils. Therefore, option B is not correct.
Thermic is not a commonly used term in geology, so option D is not a valid choice.
Therefore, The correct option is C. sedimentary.
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I NEED ASAP
Why is soil porosity important for plant growth?
(don't answer for the points plz)
Answer:
Soil porosity is important for many reasons. A primary reason is that soil pores contain the groundwater that many of us drink. Another important aspect of soil porosity concerns the oxygen found within these pore spaces. All plants need oxygen for respiration, so a well-aerated soil is important for growing crops.
Explanation:
I Hope This Helps :D
where in the cell can you find the location of inherited traits?
Answer:
D.N.A
Explanation:
The d.n.a is where all the heriditary information is stored.
What types of natural disasters are most common in our areas?
URGENT!!!!! PLEASE ANSWER
Write a description of the race using these words (all of them):
https://video.link/w/jGtKb
a. Speed
b. Constant Speed
c. Average Speed
d. Velocity
e. Acceleration
sorry i cant link a video
Answer:
of course
Explanation:
All waves need some materials to travel through.
True
False
Electromagnetic radiation is
Energy that is created only by the Sun
Energy that is created by atoms and electricity
Energy that is electric and magnetic
Energy that is magnetic and solar
EM waves have crests, troughs, and wavelengths.
True
False
Radio waves:
Are the shortest waves in the EM spectrum
Need water to travel through
Are the longest waves in the EM spectrum
Carry the most energy in the EM spectrum
What does frequency mean?
How many waves or cycles exist at one time
How many waves or cycles pass a certain point in one minute
How many waves or cycles pass a certain point in one second
How many waves or cycles pass a certain point in one hour
A cycle measures:
1 point
How long the wavelength is
How much time it takes the wave to travel from its source to Earth
The number of waves passing a certain point in one second
A single wave from one crest or trough to the next
Another word for cycles per second is ___.
Hertz
Frequency
EM radiation
Waves
Which waves have the highest frequencies?
Microwaves
UV
Waves with the highest energy
Waves with the lowest energy
Radio waves are used for ________.
TV broadcasting
Cell phones
Pagers
All of the above
In general, if a wavelength is short, __________.
It tells us nothing about the energy and frequency
The energy and frequency are medium
The energy and frequency are high
The energy and frequency are low
HELP!!! ILL GIVE YOU BRAINLIEST
the sun transmits energy to the earth in the form of?
A. radiation
B. conduction
C. convection
Answer:
radiation
Explanation:
Answer:
pa follow heart me follow back and if it is correct for you pleaankzzxxc
Question
the sun transmits energy to the earth in the form of?A. radiation
B. conduction
C. convection
EXPLANATION:C: Convection Transfer of the Sun's Energy through Earth's SystemsWhen the Sun's energy moves through space, it reaches Earth's atmosphere and finally the surface. This radiant solar energy warms the atmosphere and becomes heat energy. This heat energy is transferred throughout the planet's systems in three ways: by radiation, conduction, and convection.Science/ physis's please help me
Answer:
nucleotides
Explanation:
Answer:
B. Nucleotides
Explanation:
A player cathces a ball. Consider the action force to be the impact of the ball against the players glove. What is the reaction to this force
Answer:
Force that the glove exerts on the ball is the reaction force opposite to the impact of ball on player's hand
Why did SpaceX install sun shields on the Starlink satellites? A to reduce light pollution caused by the satellites B to keep the satellites cool C to increase the amount of light reflected by the satellites D to provide solar power to the satellites
Answer:
The Answer is A
Explanation:
SpaceX was hoping to limit the effect on astronomy by providing sun shields to Starlink.
Hope I could help. If I was indeed correct, I would appreciate it if you can mark me as Brainliest.
What is the change in air pressure a good indicator of a change in temperature be a change in the weather I decrease in humidity D an increase in the chance of rain
Answer:
A
Explanation:
warm air rises creating low presure
cold air sinks creating high presure
so this means that temprature is realated to presure.
Seattle, Washington and Bismarck, North Dakota experience very different temperatures even though they are at the same latitude. The air temperatures are affected by their surroundings! Which city would be hotter during the day: Bismarck or Seattle? Why?
Answer:
BELOW
Explanation:
Seattle (near water) would have hotter temperatures because it is by a large body of water. Unlike Bismarck which is surrounded by land. Bismarck would get hotter. Seattle would be affected the large body of water which heats more slowly than the continent warming.
a can of soup is begin heated in a sauce pan. as the soup is heated, the warm fluid becomes less dense and rises, while the cooler part of the soup is more dense and sinks. this current of soup is an example of?.
A. radiation
B. conduction
C. convection
Cause and Effect: How do changes in temperature affect air? Pls hurry I’m being timed
A roller coaster accelerates riders from 0 to 48 meters per second in 4.0 seconds. What is the force needed to accelerate a 60-kg rider?
Answer:
Not sure, It doesnt say anything about kg-
Explanation:
All plants are able to complete the process of ______ which means they are able to use energy from sunlight to make food.
stay positive and happy pls! stay strong as well! :D
Answer:
photosynthesis
Explanation:
scienceeeeeeeeeeeeeeee
Which of the following shows two vehicles with equal velocities? A- two identical cars traveling at the same speed in different directions. B- two identical cars traveling at different speeds in the same direction. C- a car and a motorcycle traveling at the same speed in opposite directions. D- a car and a motorcycle traveling at the same speed in the same direction
A car and a motorcycle traveling at the same speed in the same direction have the same velocity.
Velocity is the time rate of change in displacement. It is given by:
Velocity = displacement / time
Velocity is a vector quantity, hence it has both magnitude and direction.
Two vehicles are said to have the same velocity if the have the same speed and move in the same direction.
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According to Ohm's law, which is stated as I = V + R, which two sentences are true?
Answer:
According to Ohm's Law, the current through a conductor is directly proportional to the electric potential difference across the conductor. Hence, the current will increase by increasing the voltage in the circuit.
Please help!!!!!!!! 25 points
Answer:
B: beaks, finches.
Explanation:
Beaks, finches. This is because he noticed that fruit-eating finches had beaks similar to parrots, while finches that ate insects had narrow beaks. The difference in their beaks is due to adapting to different environments which causes them to evolve into different species of finches.
Why do you see objects when you shine a flashlight in a dark room?
Answer:
We see objects in a dark room due to the emission of light photons which are sensitive to our eyes. Darkness is simply a terminology used to describe the absence of light. Visible light to human is a component of the electromagnetic spectrum. Our eyes have receptors that picks the photons which light releases
Explanation:
Your family just moved into a new house. There are three rooms available for you, your brother and sister, but one is larger than the others and has a bigger closet. Your sister has the most clothes and insists she needs the room. Your brother thinks he should get the room because he’s the oldest. You want the extra space for your drum set. It bothered everyone when you practiced in the dining room. Your parents told you to work it out amongst yourselves.
Conflict Scenario:_____________________________________________
Why?
here are the choices
Competition
Avoidance
Accommodation
Compromise
Collaboration
Answer:
Competition/collaborate most likely collaboration
Explanation:
Trust me on this this will be the best and least messy way to handle the problem, first try to see if your sister can give away some of her clothes, does your brother really need the room, and can you find a different place to store your drum set if not, competition. Decide a fair competition, something that no one is better at than the other, decide the rules, no cheating, and whatever the out come try to be mature about it, maybe your parents will reward you and your siblings.
Explain why an X-linked recessive trait is expressed more commonly in males than in females.
Answer:
X-linked recessive inheritance
A male with a mutation in a gene on the X chromosome is typically affected with the condition. Because females have two copies of the X chromosome and males have only one X chromosome, X-linked recessive diseases are more common among males than females.
what is one way the internet has made our lives better? *
A. Our photos can become memes.
B. Employers can find out all about us.
C. Staying in touch is easier.
D. People can share our photos without asking.
Answer:
i think the answer is C
Explanation:
Answer:
C
Explanation:
help with i) and ii) pls >_
Answer:
4 it the corrcert anser
Explanation:
A car, X, with a mass of 1500 kg is moving west with an acceleration of 0.50 m/s2. A second car, Y, of equal mass is heading east with an acceleration of 1.0 m/s2. Which of the following statements best describes the net force acting on each car?
Answer:
A
Explanation:
Do you do more work if you go up a mountain at a steep angle versus a gradual angle?
Answer:
For an inclined plane, less force is put into moving an object up the slope than if the object were lifted straight up, so the mechanical advantage is greater than 1. The more gradual the slope of the inclined plane, the less input force is needed and the greater the mechanical advantage.
The law of superposition allows geologists to determine _______ timelines.
A.) Relative
B.) Exact
C.) Probability
D.) Coventional
Answer
b exact because The principle of fossil succession states that different types of fossil organisms.
The law of superposition allows geologists to determine relative timelines. Using superposition principle, the relative age of rocks in the earth surface can be determined.
What is super position principle?This law states that, older sedimentary rock layers are positioned below younger sedimentary rock strata according to the law of superposition. scientifically speaking, rocks and silt build up in layers throughout time, with each layer forming in temporal order.
The younger rock layers are found beneath the older rock layers, which form first. In the middle of the 1600s, Nicolaus discovered this idea after examining rock layers and concluding that geological history was obvious.
Applying this to the actual world, the oldest layer of rock would be found at the bottom of a cross-section of a mountain or deep cavern, and each successive layer above it would be younger or newer. It portrays the image of rock strata produced in stacks through the word superposition, which means to set one on top of the other.
Hence, the relative age of rocks and the period of its formation can be determined.
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HELP!!!
on a cold winter night, you sit near a fire place.The heat travels toward you and heats you even though you are not in contact with the flame.
A. Radiation
B. conduction
C. convection
Answer:
radiation
Explanation: