Answer:D
Explanation: Because it has the least amount of density in it. All the others are heavier, meaning they will sink. Just like if you drop a rock water and a feather, the feather will float.
Density def:
Density, mass of a unit volume of a material substance. ... Density offers a convenient means of obtaining the mass of a body from its volume or vice versa; the mass is equal to the volume multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d).
The rock with a mass of 8 grams will float when placed in water because the density of this rock is less than the density of the water.
Given,
Water has a density of 1g/mL.
There are four rocks that all have the same volume of 10 cubic centimeters.
The mass of each of these rocks is given below.
A.) 30 grams
B.) 20 grams
C.) 12 grams
D.) 8 grams
We need to find which one of the four rocks will float when placed in water.
What is density?Density is the ratio of mass and volume.
D = mass / volume
If an object's density is less than the water density the object will float on the water.
Find the density of each rock.
All rocks have the same volume.
V = 10 cm³
Convert it into milliliters.
1 cm³ = 1 ml
10 cm³ = 10 ml
So,
V = 10 ml
A.) 30 grams
D = 30 g / 10 ml = 3g / ml
B.) 20 grams
D = 20 g/ 10 ml = 2g / ml
C.) 12 grams
D = 12 g / 10 ml = 6g / 5 ml = 1.2 g / ml
D.) 8 grams
D = 8 g / 10 ml = 4 g / 5 ml = 0.8 g / ml
We see that Option D is the only rock that is less than the density of water.
i.e 0.8 g / ml < 1 g / ml
Thus rock with a mass of 8 grams will float when placed in water.
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will give brainlyst for best answer
Answer:
what I got was that the 4 top answers are kinetic and stored energy is potential
1
Read the excerpt from Narrative of the Life of Frederick Douglass. Identify the tone in the following sentence.
"How I escaped death, I do not know. There I was, entirely alone, in a thick wood, in a place new to me. My cart was upset and shattered, my oxen were entangled among the young trees. and there was none to help me."
a. Suspensful, stressful
b. Thrilling, exciting
c. Mysterious
d. Factual
Answer:
The answer is C. The way Douglass explains his situation gives off mysterious vibes than anything else. sorry if it's wrong! (┬┬﹏┬┬)
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Flies are scavengers and tend to break down dead organisms. Based on this information, what is a plant characteristic that would best attract flies?(1 point) flowers that are brightly colored flowers that are brightly colored flowers that emit a rotten odor flowers that emit a rotten odor flowers that are light colored flowers that are light colored flowers that emit a sweet odor
Scavengers are the organisms who feeds upon the dead organisms. The flowers which emit rotten odor attract most of the scavengers. Thus, the correct option is B.
What are Scavengers?A scavenger is an organism that mostly consumes the decaying biomass, such as meat or rotting plant material in an ecosystem. Many scavengers are a type of carnivore. A carnivore is an organism that eats meat.
Vultures are the best example of scavengers. Other examples of scavengers include Coyote, Striped Hyena, Jackals, Bottle flies, Ants, Beetles, etc.
Scavengers and decomposers feed on dead materials and break them down into chemical parts. Nitrogen, carbon and other nutrients can then be used again by plants and animals. Without decomposers and scavengers, the world would be covered with dead plants and animals. As the dead organisms cannot be decomposed.
Therefore, the correct option is B.
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We can predict that autumn will follow summer.
True
False
Answer:
False
Explanation:
look it up lol
Which part of the eye refracts light and focuses it on a single spot?
cornea
retina
iris
pupil
Answer:
Cornea
Explanation:
Internet
Answer:
Cornea
Explanation:
What steps of the scientific method did the four theories skip?
Two types of interactions that might have negative impact on the snow leopards population is
Does anybody knows where Cocomelon was produced? Please tell the address of where was it produced.... If you tell me the address with proof.. you will get brainliest :D
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Answer:
September 1, 2006 the first video on the channel cocomelon was made (ThatsMEonTV). co owner 55 yr old Jay Joen. Address of Treasure Studio Inc. (where its made) 18100 VON KARMAN AVENUE, SUITE 400 IRVINA, CALIFORNIA UNITED STATES 92612 I have no idea what I'm doing
Why you would weigh more on Jupiter than you do on Earth.
Analogous structures mean? *
Their structures are different and they're used for different things.
Their structures are different but they're used for similar things
Their structures are the same but they're used for different things
Their structures are the same and they're used for similar things
Which of the following is described by the change in an object’s position? please helppp
1. position
2. force
3. motion
Answer: C:motion
Explanation:
Which is an example of a prokaryotic cell?
E.coli bacteria cell
Tree leaf cell
Human skin cell
Yeast fungal cell
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A car drives with a constant speed of 55 miles per hour. How far can it travel in three hours? Also i'm in 5th grade not in high school this is science
Answer:165mph
Explanation: just do 55*3
During which era did dinosaurs become extinct?
Answer:
About 70 million years ago, all those huge creatures went extinct. But what was the reason? For 150 million years, the most widespread creatures on Earth were certain large reptiles known as dinosaurs.
Answer:
at the end of the Cretaceous Period
Explanation:
Which example best illustrates flower-pollinator coevolution?
A. Bees carry pollen grains from flower to flower.
B. Hummingbirds use long beaks to collect nectar from tubular flower
C. Butterflies rest on pale-colored flowers.
D. Ants eat flower nectar and occasionally get pollen stuck to their bodies.
Answer:
a or b I think its A tho
Explanation:
The best example iillustrates flower pollinated coevolution is Bees carry pollen grains from flower to flower.
What is coevolution in flower?Coevolution is the term used to describe the mutually reliant evolution of at least two species. Since its initial description in relation to insects and flowering plants, coevolution has been used to explain fundamental evolutionary processes like sexual reproduction, contagious diseases, and ecological communities.
Coevolution works by exerting reciprocal selective pressure on two or more species, similar to an arms race where competitors try to outdo one another. Predator-prey, host-parasite, and other competitive relationships between organisms are classic examples.
Even though coevolution often only involves two species, it can occasionally involve more. Coevolution also produces modifications that are advantageous to both parties.
Therefore, The best example iillustrates flower pollinated coevolution is Bees carry pollen grains from flower to flower.
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In your own words, explain what the geosphere is.
Answer:
one of the shells or spherical layers within the earth delimited above and below by discontinuities
Explanation:
Hope this helps :)
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Using a diagram or physical model to make a prediction about how lunar phases might be changed if the moon was hit by an asteroid
please help quick
Answer:
mak a plastik moon
Explanation:
make a plastic moon and make a bid dent
The actual effects would depend on various factors, including the size and velocity of the impacting asteroid, the angle of impact, and the specific characteristics of the Moon's surface. Also, these effects might be subtle and might require careful observation to detect changes in lunar phases.
New Crater Formation: The impact of an asteroid on the Moon's surface would create a new crater. This crater would likely disrupt the terrain and create a visible indentation on the Moon's surface.
Altered Reflectivity: Depending on the size and composition of the impacting asteroid, the reflectivity (brightness) of the impacted area could change. A significant impact might expose different layers of the Moon's surface materials, affecting how it reflects sunlight.
Changing Shadows: The new crater and any ejected materials could cast unique shadows during different lunar phases. The angle and position of these shadows might be different from what we typically observe.
Temporary Brightness: Immediately after the impact, the debris and ejected material might temporarily increase the Moon's brightness, potentially affecting its appearance during full moon phases.
Long-Term Effects: Over time, if the impact was significant, the crater and surrounding area might continue to affect the Moon's appearance during different phases, causing irregularities in the brightness and shadow patterns.
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Explain how a decrease in competition between species leads to the sudden appearance of many new species?
Answer:
In a long enough time the selection pressures caused by competition can cause evolutionary changes in resource preferences or growth strategies of organisms [19]. ... When two species compete for the same limiting resource the reduction of the niche overlap may lead to evolutionary changes in both species.
Explanation:
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Answer:
Explanation: bro
During which era did plants start to appear on land?
Answer:
Cambrian period
Explanation:
Answer:Cambrian period
Explanation:
Which part of the eye shrinks and enlarges depending on the amount of light that is present?
visual cortex
retina
cornea
pupil
You are riding in a car and speed up. What are the possibilities for the acceleration that your car undergoes? (Select all that apply.) Also i'm in 5th grade
-2.0 mph/s
-5.0 mph/s
2.0 mph/s
5.0 mph/s
Answer:
All of them
Explanation:
Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both. In a car you could accelerate by hitting the gas or the brakes, either of which would cause a change in speed.
1.Earths ozone layer absorbs solar radiation,protecting the biosphere.Which atmospheric layer includes the ozone layer?
Which statement gives an advantage of multicellular organisms?
One cell performs all of the necessary functions.
All of the cells are the same.
They can grow large.
They can reproduce quickly.
Explain pls
The Moon's mass is lower than that of Earth, thus its gravity is ____ Earth’s gravity.
This is 5th grade btw
1. more than
2. less than
3. the same as
I need help please!!
Answer:
Explanation:
Solids, liquids and gases are three states of matter. In solids, the particles are tightly packed together. In liquids, the particles have more movement, while in gases, they are spread out. Particles in chemistry can be atoms, ions or molecules.
Which of the following is described by the change in an object’s position? btw im in 5th grade
1. position
2. force
3. motion
Give one example of a question that science could test. Then, explain in your own words why it is an example of a scientific question.
ASAP give me something!!!!!
Answer:
A good scientific question can be tested by some experiment or measurement that you can do. In this case "Where does the Sun come from?" is not as good as, "How will human skin, covered with SPF 30 suntan lotion, react to solar radiation compared to skin not covered with suntan lotion?
Explanation: