Write a journal entry from the perspective of a particle of light, called a photon. Your story should follow the photon as it travels from a star in the Milky Way that is 25 light years away from Earth, all the way to the eye of a young person gazing up at the night sky through their bedroom window. Compose your entry in complete sentences. Be sure to answer these questions in your journal entry: • How long was the journey to Earth? • How fast did you travel? • Was your speed affected when you entered Earth’s atmosphere? If so, how? • Was your speed affected when you traveled through the glass of the window? If so, how? • What was the journey like to get to the retina?
Answer: i got your back
Astronomy (from Greek: ἀστρονομία, literally meaning the science that studies the laws of the stars) is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole.[1]
Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars. Nowadays, professional astronomy is often said to be the same as astrophysics.[2]
Professional astronomy is split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects. This data is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the development of computer or analytical models to describe astronomical objects and phenomena. These two fields complement each other. Theoretical astronomy seeks to explain observational results and observations are used to confirm theoretical results.
Astronomy is one of the few sciences in which amateurs play an active role. This is especially true for the discovery and observation of transient events. Amateur astronomers have helped with many important discoveries, such as finding new comets.
Explanation:
Laws, theorie
Question 4 of 10
Newton's second law of motion states that the acceleration of an object
depends on the force exerted on it, divided by its mass. This law can be
summarized by the equation F = mx a.
Why is this a law and not a theory?
A. Newton's statement involves mathematics. A theory is a
description based on observations,
OB. Newton's statement describes the relationship between mass,
acceleration, and force. A law is an explanation of natural events.
O C. Newton's statement is supported by research. A theory is only an
educated guess
D. Newton's statement has been proved with scientific evidence. A
theory can change when new evidence is found that does not
support the theory
SUBMIT
The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.
Answers won't help, but a hint will.
Answer:
Its D
Explanation:
Took the test
Which stage of the cell cycle is represented by the '?' in the diagram? *
Captionless Image
cytokinesis
meiosis
fission
budding
Answer: the answer is cytokinesis
Answer:
Cytokinesis
Explanation:
cytokinesis is the correct option.
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Match each part of the neuron with the correct label.
Answer:
yes. those are labeled correctly
Explanation: post protected
Predict how many different mRNA sequences could code for the following amino acid sequence plus a stop codon: Met-Trp-Cys-(Stop).
Answer: 6
Explanation:
This is because the Met and Trp are coded by one codon, Cys is coded by two different codons, and Stop is encoded by three different codons. Therefor, 2x3=6.
each upward movement of the basilar membrane causes the stereocilia of the inner hair cells to bend, opening __________ gates.
PLEASE HELP!!!!!!!!!! EARTH AND SPACE SCIENCE!!!!!!!
Which statement correctly identifies Old Faithful and explains how it formed?
It is a caldera formed from a vent collapsing.
It is a mud pot formed from pools of boiling, acidic mud.
It is a volcanic neck that formed as a result of magma that never erupted.
It is a geyser that formed due to water heated by magma erupting at Earth’s surface.
Answer:
It is a geyser that formed due to water heated by magma erupting at Earth’s surface.
Answer: d. It is a geyser that formed due to water heated by magma erupting at Earth’s surface.
Explanation:
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How does the temperature change as you move from the top to the bottom of
the thermosphere?
A. It stays the same.
B. It changes randomly.
C. It increases
D. It decreases
In the general population, 1 in 300 individuals is a carrier for Tay-Sachs disease, while 1 in 30 individuals of Ashkenazi Jew descent are carriers. Tay-Sachs also affects 1 in 30 individuals with French-Canadian ancestry, although two completely unique mutations are responsible for the Ashkenazi and French-Canadian mutations.
A) What are the chances of two individuals having a child with Tay-Sachs if both individuals are not of Ashkenazi or Franch-Canadian descent?
B) What are the chances of two Individuals having a ¢hild with Tay-Sachs lf one Individual Is of Ashkenazi descent and one ls not?
In the general population where 1 in 300 individuals is a carrier for Tay-Sachs disease, while 1 in 30 individuals of Ashkenazi Jew descent are carriers. Tay-Sachs also affects 1 in 30 individuals with French-Canadian ancestry then in this condition , 1 in 2 will get the disease that is there is 50% possibility.
What type of disease is discussed in the question ?It is an autosomal recessive disorder.
The chances where the two two individuals having a child with Tay-Sachs if both individuals are not of Ashkenazi or Franch-Canadian descent is 25 % that is the child will not have any disease.
The chance where the child inherits a mutated one from one parent and becomes a carrier, but will not have the condition themselves. 1 in 4 (25%) chance that means the child inherits a faulty gene from both parents and develops Tay-Sachs disease.
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I am thinking of an animal that kind of looks like a raccoon, and starts with an A. With just that information: what is the common name for that organisim.
Answer:
Armadillo
Explanation:
if a dna strand has the nucleotide sequence of CCGAGTTG, what is the nucleotide sequence of the complementary strand
Answer:
i dont know
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the three steps that are required for dna replication are
Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
The three steps that are required for DNA replication are initiation, elongation and termination.
What is DNA replication ?The process in which DNA of a cell under go duplication to produce two copies during S-phase of cell cycle called as DNA replication.
It involves 3 steps such as initiation step where the origin of replication of DNA molecule undergo unwinding into two DNA strands.
An incomplete unzipping by forming replication fork is created is catalyzed by the helicase enzyme.
Secondly in elongation step the DNA polymerase enzymes make the complementary sequence against each parent template strand.
It is an unidirectional, one strand which is synthesized in a continuous manner called leading strand, the strand which is synthesized in a discontinuous manner called lagging strand with Okazaki fragments.
Termination occurs in the last step, when the parent molecule has been completely replicated.
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5. It is the process of separating coconut pulp (sapal) from coconut milk.
A on stallization B. disollation C. filtration
D. flotation
Answer:
the answer is c
Explanation:
filtration
2
What is the JOB of the cell membrane?
To protect and organize cells.
any one interested in revising Biology nutrition in animals?
Answer:
yes...let's do it am interested
Answer:
yeah I am interested in revision
A bacterium is inoculated into a tube of nutrient broth and incubated. After incubation, it appears turbid throughout, top to bottom, with the most amount of turbidty at the very top. This bacterium would be called a:
Answer:
facultative anaerobe
Explanation:
Answer:
Can I guess the answer just give me a sec
How does evaporative cooling work biology.
Nearly all forests in ________ have been cut at least once during the past 300 years, so very little original (virgin) forest remains.
Answer:
In the United States.
Explanation:
It doesn't have very many original forests because people have been chopping them down and planting new ones.
which joint is considered the most flexible joint in the body?
Answer:
The shoulder.
Explanation:
The shoulder is the most flexible joint in the body, making it the most susceptible to instability and injury. This mobility provides the upper extremity with tremendous range of motion. The shoulder join is also known as a 'ball-and-socket' joint.
Why is apoptosis important to cells.
What are organelles.
Organelles are specialized structures that perform various jobs inside cells.
There are two types of reproduction, sexual and asexual Sexual reproduction involves two parents, while asexual reproduction only involves one,
Sort the reproductive processes below according to whether they are asexual or sexual.
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Creation of an egg
Creation of fruit
Mushrooms producing spores
Production of seeds
Stem cuttings of plants
Sexual
Asexual
Budding in yeast
drag and drop answer here
drag and drop answer here
Answer:
Creation of egg- Sexual
Creation of fruit - Sexual
Mushrooms producing sporea - Asexual
Production of seed - Sexual
Stem cutting - Asexual
Budding in yeast - Asexual
How many pairs of spinal nerves do you have?
Answer:
b. 31
Explanation: is correct
Una boya está anclada al fondo del océano. Una gran ola se acerca a la boya. ¿Cómo se moverá la boya a medida que pase la ola?
Answer:
lentamente con la ola
Explanation:
After cytokinesis I of meiosis, the chromosomal makeup of each daughter cell is…?
a) haploid, and the chromosomes are each composed of a single chromatid
b) haploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross over)
c) diploid, and the chromosomes are each composed of two IDENTICAL chromatids
d) haploid, and the chromosomes are each composed of two IDENTICAL chromatids
e) tetraploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross
over)
f) diploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross over)
Most water is used for irrigation and crop. What is one way to help conserve water in relation to agriculture?
Answer:
Drip Irrigation
Explanation:
How is the gametophyte stage in gymnosperms different from the gametophyte stage of mosses
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NEED HELP ASAP
Select ALL the correct answers. Which statements about tsunamis are true? Group of answer choices:
Coastal areas are safe from them.
Underwater landslides can cause them.
Earthquakes can stop them from causing flooding.
They are less destructive than typical wind-caused waves.
They are powerful ocean waves.
Answer: The Answer's are A( They are powerful ocean waves) B(Underwater landslides can cause them)
Explanation: I Got it correct on my test!
(A) They are powerful ocean waves.
(B) Underwater landslides can cause them.
Plato :)
Protein is digested completely in the
Answer:
from the stomach to the small intestine
how population growth rate, generation time and carrying capacity affect the population growth of each species over the short term (30-50 generations) and long term (100 generations)