TRUE or FALSE: The seasons are caused by the tilt of the Earth’s axis. A. FALSE B. TRUE
How do conduction and convection differ?
Conduction can move through empty space to transfer heat; convection cannot.
Conduction does not require objects to have direct physical contact; convection does.
Conduction requires objects to have direct physical contact; convection does not.
Conduction transmits heat through electromagnetic waves; convection does not.
Under which of the following conditions would a fossil most likely form?
A. a living thing dies and sediment is very slowly deposited on top of its body.
B. a living thing dies and sediment quickly covers its body.
C. a living thing dies and its skeleton is left exposed to the elements.
D. a living thing dies and radioactive element breaks down its body.
Please help I am so confused!!
Answer:
The answer is A) a living thing dies and sediment is very slowly deposited on top of its body.
Explanation:
The formation of a fossil depends a lot on the chemical composition of the organism that has died. Generally, the hard materials of an organism such as bones tend to have a greater amount of minerals within their composition, which facilitates the formation of a fossil. In order for a fossil to form, it is necessary that all the soft tissues of the organism have disappeared and sedimentation of the organism occurs, which prevents decomposition. This fossilization process occurs in thousands of years.
What is the common name of this gas, N2, the most prevalent in our atmosphere? A) sodium B) nickel C) nitrogen D) oxygen
Answer: The correct option is C) Nitrogen.
Nitrogen ( N₂) is the most prevalent gas in the atmosphere. It contributes 80% in the atmosphere. It is a highly stable gas because it contains three bonds between the two nitrogen atoms. So, it requires high energy to break these chemical bonds.
Nitrogen is the basic nutrient for the survival of all life forms. It is present in bio-molecules like proteins and DNA.
Nitrogen gas can not be used as such by the plants and animals. Therefore, it is converted into other forms so that plants and animals can utilize it. The process of conversion of N₂ into other biologically available form is termed as Nitrogen fixation.
The first samples of the moon’s surface to be brought back by Apollo astronauts were
carefully examined for signs of life. What sort of evidence do you think scientists looked for and how did they go about obtaining that information? Were there any signs of life?
There are numerous methods for gathering information or proof. Scientists can collect their data through making observations of the natural world, conducting laboratory experiments, or using computer models.
What is astronaut?A person who has undergone specific training to travel to space is known as an astronaut.
The duties of an astronaut aboard a spaceship can vary. Usually, a pilot and a commander work together to lead the mission.
The term "astronaut," which is derived from the Greek words for "star" and "sailor," is frequently used to refer to someone who has travelled through space.
More specifically, in the West, the term "astronaut" refers to space travellers from the United States, Canada, Europe, and Japan.
Six Apollo flights between 1969 and 1972 returned 382 kilogrammes (842 pounds) of lunar rocks, core samples, pebbles, sand, and dust. 2200 unique samples from six different Moon exploration locations were returned by the six space missions.
Thus, these are they obtain that information.
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Final answer:
Scientists looked for organic compounds, microfossils, and potential microorganisms in the lunar samples, using thorough laboratory analyses. No signs of life were found on the Moon. The samples still provide valuable information for scientific research about lunar history.
Explanation:
When the Apollo astronauts brought back samples of the Moon's surface, scientists searched for evidence of life by examining these samples for organic compounds, microfossils, and any possible living microorganisms. They used various types of analyses, such as microscopy, chemical analysis, and culturing techniques. Despite the detailed examination of nearly 400 kilograms of lunar material, no signs of life were found on the Moon. The studies did provide invaluable insight into the Moon's composition and history, including its formation about 4.5 billion years ago. Since then, the samples returned from the Apollo missions have continued to be of scientific value, enhancing our understanding of lunar geology and the early Solar System.
The comprehensive study of lunar soil and regolith also confirmed that it had been pulverized by impacts, as suggested by the Surveyor missions, and was firm enough to support the Apollo Lunar Surface Experiment Package (ALSEP) which operated for years after deployment. Such detailed analysis has been crucial to expanding our knowledge of the Moon and has left a lasting legacy, with the lunar material collected still providing data for current scientific research.
Students are studying the changing concentration of carbon dioxide levels in different substances. They insert sensors into each substance and allow a device to graph the results. What are the students most likely using? thermometers microscopes probeware silverware
Answer:
I think the answer is probewear i am not 100% sure though
Explanation:
Feel free to tell me if i am wrong and if i am comment the right answer!!!
Which phrase best describes the time period in which the current body of scientific knowledge was developed?
A. Just over the last 50 years
B. Throughout all of history
C. Mostly during Roman times
D. Mostly in the 20th century
The Answer for (APEX) is B:Through out all of history.
Final answer:
The current body of scientific knowledge was developed throughout history, with significant progress since the Renaissance and notable advancements in the 20th century.
Explanation:
The current body of scientific knowledge was developed over a broad span of history, displaying a significant progression since the Renaissance and accelerating during the Industrial Revolution. The pace of scientific development has been particularly remarkable in the 20th century, which has been characterized by discontinuous changes and dramatic advances known as 'scientific revolutions'. Therefore, the phrase that best describes the time period in which the current body of scientific knowledge was developed is B. Throughout all of history, although the most striking advancements occurred in the last few centuries.
amino acids are divided up into 2 basic groups. what are they
More photosynthesis causes pH levels to increase or decrease?
Can someone explain the definition of the stimuli. I do not understand the google definition.
if you wanted to be a certain that the rait would appear in the offspring of the plants or animals that you were breeding whhat would you have to find out about the parents
Answer:
correct
Explanation:
The leaves of a plant are dotted with openings known as stomata. When open, stomata allow the plant to exchange gases and allow moisture to evaporate, helping to draw water from the roots up into the plant. These activities help the plant to
maintain homeostasis
synthesize minerals
produce light energy
decompose organic matter
Answer:
The correct answer is "maintain homeostasis".
Explanation:
Homeostasis is a concept used in science to refer to the propensity to have a constant internal environment within an organism. The plants maintain its water homeostasis in the along the whole plant by the dotted opening in its leaves known as stomata. By allowing the exchange of gases through stomata, the plant regulate how much water is presented in the roots and in the plant's body, maintaining an internal environment within the whole organism.
Asexually, fungi can reproduce by fission, fragmentation, budding, or _____.
A. producing spores
B. mitosis
C. meiosis
Fungi can reproduce asexually through fission, fragmentation, budding, and spore production. Spore production allows for rapid creation of new organisms in suitable conditions. Asexual reproduction in fungi doesn't require a partner and enables quick colonization of new environments.
Explanation:Asexually, fungi can reproduce by multiple mechanisms including fission, fragmentation, budding, and producing spores. Spore production is a common mechanism in many different types of fungi. These organisms create unique reproductive structures, where spores are formed. When conditions are appropriate, the spores are released and can grow into a new organism. It's important to note that asexual reproduction in fungi allows for rapid proliferation and colonization of new environments, as it doesn't require a partner.
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Maya believes inchworms are faster than snails.she conducts an experiment to test her hypothesis which of the following would show her confirmation bias?
A-maya disproves her hypothesis
B-maya proves her hypothesis
C-maya ignores the inchworms which are slower than snails
D-maya focuses equally on all worms in the experiment
Answer: Option C
Explanation:
Maya believes that inchworms are faster when compared with snails. To prove this hypothesis she performs experiment and while performing experiment she ignored the inchworms that moves slower than snails.
This is a biased condition because she ignored the inchworms that were slow.
If she would have been unbiased then she should have tested all the inchworms that were slow or fast from snails.
Hence, option C is the correct answer.
What is the Sun's apparent path through the sky in the northern hemisphere
The Sun's apparent path through the sky in the northern hemisphere forms an arc that changes with the seasons, with longer, higher paths in summer and shorter, lower paths in winter, affecting daylight hours.
The Sun's apparent path through the sky in the northern hemisphere changes with the seasons due to Earth's 23.5° tilt on its axis and its orbit around the Sun. During summer in the northern hemisphere, the path is long, and the Sun rises north of east, culminating at a high point in the sky around noon before setting north of west, resulting in longer days. In contrast, during winter, the Sun takes a shorter path, rises south of east, and sets south of west, spending less time above the horizon and leading to shorter days. On equinoxes, approximately March 21 and September 21, the Sun rises directly east and sets directly west, spending equal amounts of time above and below the horizon.
At noon, the Sun reaches the highest point in its daily journey across the sky, crossing the north-south direction, usually to the south of the observer in the northern hemisphere. This height above the horizon at noon varies with the seasons, reaching its maximum during the summer solstice around June 21 and its minimum during the winter solstice around December 21.
Meg and Rachel each have bowling balls with the same mass. They both roll them as hard as they can and then measure the speed of the balls. Meg's ball and Rachel's ball were measured to have the exact same speed. What do you know about the forces applied by the girls?
A) Meg applied more force than Rachel.
B) Rachel applied more force than Meg
.
C) They applied an equal amount of force.
D) They applied a almost the same amount of force.
Meg and Rachel applied the same force because the speed was the same amount of the force. Thus, option D is correct.
What is force?
In general language we can say that push or pull is called force.
According to newton second law of motion force is rate change of momentum it means
F= d/dt×(mxv)
Where m is mass and v is velocity
But in general case mass is constant.
So ,Force
F= mxd/dt×(v)
Since we know that rate change of velocity is acceleration.
Then we can say that
F= mass x acceleration
S.I unit of force is Newton
1 Newton = 1kg×m/sec^2.
Force and acceleration is a physical quantity which have both i.e magnitude and direct it means both are vector quantity. According to newton second law of motion force is rate change of momentum it means
F= d/dt×(mxv)
Therefore, Meg and Rachel applied the same force because the speed was the same amount of the force. Thus, option D is correct.
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Earth's dynamic processes allow our planet to recycle:
A) water, rock and air
B) water, rock and surface materials
C) rock, air and surface materials
D) air, surface materials and water
Answer:
B) Water, rock, and surface materials, or the second option.
Explanation:
As Erosion fron ocean waves continues, what will most likely happen to a hole in a landform?
A gazelle population nearly doubles in four months (March – June). Which statement below best explains this change in gazelle population?
:
The numbers of predators have increased.
Food resources have diminished.
Density-dependent limiting factors are having a positive effect on the population.
Limiting factors are having a negative effect on the gazelle population.
which cells would you be most likely to find in the dermis?
A. keratinocytes
B. melanocytes
C. pacinan corpuscels
D. fibroblasts
what is the list of organelles that take part in protein synthesis
The ability of organisms to maintain a stable internal environment despite changes in the external environment is known as _________.
every amino acid has four characteristic components. List the four parts of an amino acid
What conclusions can you infer about the heart of an adult with poor fitness
Which statement is evidence used to support the endosymbiotic theory? Mitochondria and chloroplasts contain their own DNA. Mitochondria and chloroplasts are surrounded by one membrane. Mitochondria and chloroplasts reproduce similar to eukaryotic cells: through mitosis.
The first one: both mitochondria and chloroplsats have their own DNA.
Answer:
Mitochondria and chloroplasts contain their own DNA.
Explanation:
ok
1. A hypothesis and a theory are related because
A.a Theory is always used to develop a hypothesis
B.They are both developed in the absence of observations.
C. the data collected when a hypothesis is tested can support a theory.
D. an experiment is done before the formation of both a hypothesis and a theory.
2.which word describes the energy in an exergonic reaction?
A. created
B. relased
C.absorbed
D. destroyed
3. whcich describes the progress of photosynthesis?
A. carbon dioxide + water ->glucose + oxygen
B.glucose+oxygen ->carbon dioxide+ water
C.water+oxygen -> glucose+carbon dioxide
D. glocose+ carbon dioxide-> water+ oxygen
4.The role of an enzyme in a chemical reaction is to change which of the following?
A. the type of rection
B. the activation energy of the reaction
C. the pH at which the reaction occur
D. the temperature at which the reaction occurs
C. the data collected when a hypothesis is tested can support a theory.
Explanation:In scientific method theory and hypothesis are two major components. A hypothesis is either a suggestion for an observable phenomenon, or a prediction of a possible relation among different phenomena. Whereas a theory is a tested, well-substantiated, unifying explanation for a set of verified, proven factors. So we can say that the data collected when a hypothesis is tested can support a theory.
Answer to Q2
B. released
Explanation:The word Exo means out or released therefore exorgonic reactions are those reactions in which energy is released. The same reaction which allows energy release is called exothermic reaction and the energy is in the form of heat.
Answer to Q3.
A. carbon dioxide + water ->glucose + oxygen
Explanation:Photosynethesis is the process in which plants make their food in the presence of sunlight. A simple word equation that can be used to describe the process of photosynthesis is carbon dioxide + water —> glucose + oxygen + water. A balanced chemical equation for the process can be written as 6CO2 + 6H2O —> C6H12O6 + 6O2. Overall, photosynthesis uses light energy to convert carbon dioxide into a carbohydrate.
Answer to Q4.
B. the activation energy of the reaction
Explanation:Enzymes are just like catalysts in an y chemical reaction. We know that catalysts are the chemicals which speeds up the reactions. In the same way enzyme speeds up the reaction and they increase the activation energy of any chemical reaction.
What was the basic shortcoming of the Greek philosophers approach to studying the material world?
Which fact was most likely discovered between the time of Mendeleev’s table and the time of Moseley’s table that helped Moseley develop his version? Atomic mass is the average mass of different samples of the same element. Different elements can have similar chemical properties even if their atomic masses are different. The number of protons in an atom is different than the atom’s total mass. Protons strongly affect an element’s atomic mass, while the electrons in atoms do not.
Answer:its option C
the number of protons in an atom is different than the atom’s total mass.
Explanation:
what are the two types of nucleotides
a. What is the density of a book whose mass is 1,800 g and whose volume is 300 cm3