There are 3 different answers you can pick from.
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2
3
Science
The theory of continental drift states that the land masses called continents were once closer together and have drifted apart over time. Which circumstance is the strongest evidence in support of this theory?
Select one:
the periodic climate changes of Earth
the migration patterns of birds
the large variety of animals on each continent
the similarity of fossils on different continents
Answer:
D or the fourth choice.
Explanation:
Which of the following statements is true based on an element with 7 valence electrons?
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The element is a stable metal.
The element is a reactive nonmetal.
The element is a stable nonmetal.
The element is a reactive metal.
Answer:
he element is a reactive nonmetal.
Explanation:
1. reaction that releases heat
outer ear
2. flow of electrons through a material toward a positive charge
compression
3. build up of electrons in a material
static electricity
4. part of the ear is responsible for capturing sound waves
exothermic
5. part of the sound wave where the molecules are pressed closely together
current electricity
What type of interaction is taking place when a turtle buries itself in the soil to stay cool?
A. biotic interaction
B. Abiotic interaction
C. Chemical interaction
D. Biotic and Abiotic interaction
HELP ME!!!
Answer:
so I would say abiotic cuz soil helps them cool down plus theres probably minerals in the soil
abiotic and biotic factors of a turtle would be:
biotic: shell, aniamals, plants organsims
abiotic: rocks, minerals, componds,temperature
hope this is right :))
Answer: biotic and abiotic interaction
Explanation: turtle, shell, biotic and soil minerals abiotic
Which of the following reactions best illustrates the Law of Conservation of Matter?
A.) H2O2H2O + O2
B.) Na + CuS Na2S + 2Cu
C.) K + AgCl KCl + Ag
D.) NaOH + 2HCl NaCl + H2O
Answer:
answer A..) H2O2HO+O2
Which of the following statements is true?
a. An insulator speeds up the transfer of heat.
b. Radiation is the transfer of heat in solids.
c. All moving objects experience friction.
d. All work gains some energy as heat.
Answer:
C is correct
Explanation:
For example, you move your hands together you are creating friction.
Which is the best way to define wind?
a
Wind is the movement of air from areas of low pressure to areas of high pressure
b
Wind is the movement of air to a colder area in the atmosphere.
c
Wind is the movement of air from areas of high pressure to areas of low pressure.
d
Wind is the movement of air pushed around and bouncing off Earth's surface.
Before you can solve a problem, the first thing you have to do is Question 2 options:
define the problem
build a prototype
design your solution
test your solution
PLS PLS PLS PLS PLS HELP MEEEEEEEE PLS PLS PLS PLS PLS
In our experiment that will compare how long it will take for 100 ml distilled water to evaporate from a from a 5" diameter container. This will be the control group. For the experiment group, we will use 100 ml of distilled water and dissolve 10 grams of table salt in the water. We will use the same diameter dish for both samples so the same amount of water surface is exposed to the air.
What is the question?
A. Does salt water evaporate when placed in a container?
B. How fast does distilled water evaporate if placed in a container?
C. How long does it take distilled water to evaporate from a 5” diameter container?
D. Does a salt water evaporate in the air faster than distilled water?
Answer:I don’t think this will do much but...
Explanation:I think it is D. You should not listen to me though because I am not sure, I just think it is the more reasonable answer (question).
A student used a portable electric drill to remove screws from a broken wooden table. He noticed that the screws holding the table together were warm to the touch after being removed from the wood. Which statement best explains this phenomenon?
A:Electrical energy from the drill was converted into chemical energy due to conductivity.
B:The process of removing the screw concentrated the thermal energy that was already present in the wood
Answer:
A.
Electricity can travel through metal, such as the screws, creating a conductor.
What is an important characteristic for chemicals released into the environment used to seed clouds?
Answer:
the rain
Explanation:
Who inspires you? Who do you aspire to be like?
Shark diving, bungee jumping, or skydiving?
What's your favorite cheesy pick-up line? Have you ever used it in real life?
What's your favorite Disney movie?
What is the weirdest scar you have and how did you get it?
Where did you and your best friend meet?
Which of your accomplishments are you most proud of?
What's the weirdest Wikipedia rabbit hole you've stumbled down?
Tell me about the best vacation you've ever taken.
What's your favorite physical attribute about yourself?
Friday night—would you rather stay in or go out?
Do you believe in ghosts?
What piece of art (book, music, movie, etc.) most influenced the person you are today?
Which would be harder for you to give up: coffee or alcohol?
What's the single best piece of advice you ever received?
Who's your best friend, and what do you love about him or her?
What's the greatest risk you've ever taken?
If you had 24 hours to do whatever you wanted in this city, what would you do?
What do you like about where you work?
What hobby have you always wanted to develop?
Answer: this seems like YOU need to answer on ur own.
Explanation:
Uranium is a radioactive element that is highly unstable and it has a half-life of 4.5 billion years. Uranium comes in many different forms (shown below). Looking at the nuclear notations below, what is the neutron number of both of the elements below? What is the relationship of the two elements below?
A: U-235 has 235 neutrons, U-238 has 238 neutrons and they are isotopes of each other.
B: U-235 has 143 neutrons, U-238 has 146 neutrons and they are isotopes of each other.
C: U-235 has 235 neutrons, U-238 has 238 neutrons and they are ions of each other.
D: U-235 and U-238 have 92 neutrons and they are ions of each other.
Answer: c
Explanation:it just is
U-235 has 235 neutrons, U-238 has 238 neutrons and they are ions of each other. So the correct option is C.
What is uranium?Since more than 60 years ago, uranium, a heavy metal, has been employed as a plentiful source of concentrated energy. Uranium is as prevalent in the Earth's crust as tin, tungsten, and molybdenum, and it can be found in most rocks in quantities of 2 to 4 parts per million.
Seawater contains uranium, which may be extracted from the seas. German scientist Martin Klaproth made the discovery of uranium in the mineral pitchblende in 1789. Following the discovery of the planet Uranus eight years earlier, it was given that name.
In supernovae, uranium is thought to have been created around 6.6 billion years ago. Even though slow radioactive decay is uncommon in the solar system, it is the primary source of heat inside the Earth today, creating convection and continental drift.
Due to its great density, uranium is also used as radiation shielding, as counterweights for aviation control surfaces, and in boat keels. The melting point of uranium is 1132 °C. Uranium has the chemical symbol U.
Therefore the correct option is C.
Read more about uranium, here
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Please Help Me!!
Zn + 2HCl --> ZnCl2 + H2 Which of the following provides the best evidence that this reaction follows the law of conservation of mass?
A scientist works for a drug company and runs experiments on their product with results that favor the company's product. This is an example of_________.
(A.) conflict of interest and confirmation bias.
(B.) getting the inside scoop about a product, buying company stock, and making a lot of money.
(C.) sound and reliable science practices.
(D.) all the above.
"A scientist works for a drug company and runs experiments on their product with results that favor the company's product. This is an example of conflict of interest and confirmation bias." Thus, option A is correct.
What is a conflict of interest?Conflict of interest has been defined as the situational circumstances where the individual or the company tries to get benefitted from the actions and behaviors that present the outcomes in favor of them. This includes manipulative strategies and steps.
The scientist manipulates drug experiments and their products to favor the company and shows biased investigations and methods that benefit the company by profiting and getting something from the official work.
Therefore, option A. conflict of interest is seen in the case.
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Given the amount of work required to move a box 15 meters across the floor is 75J. What is the force that is needed?
a. 5 N
b. 25 N
c. 30 N
d. 2 N
Have a good day and peace out
Answer:
HAVE AN BLESSED DAY AMEN!!!!!!!!!!!!!!!!
Explanation:
Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer
Answer:
i need a picture of ur question
Explanation:
I need your help.
What is the basis of an organic molecule?
(A). The basic structure is the iron atom.
(B). The basic structure is the potassium atom.
(C). The basic structure is the carbon atom.
(D). The basic structure is a carbon monoxide molecule.
Answer:
I think c
Explanation:
Answer: C
Explanation: Its C because Life is based on carbon, organic chemistry studies compounds in which carbon is a central element. The properties of carbon make it the backbone of the organic molecules which form living matter. Carbon is a such a versatile element because it can form four covalent bonds.
Which set of terms best defines what affects kinetic energy and potential energy, respectively?
position, gravity
gravity, velocity
velocity, height
height, position
Answer:
A
Explanation:
Answer:
C.
Explanation:
Velocity, height
need help as soon as possible ill give brainliest!!!!!!!!!!!!!!!!
Answer:
The Answer is Magma
Destiny is a physical property of matter and can be used to classify substance, Destiny
is calculated by which of the following
A. d =v/m
B.d =m/v
C.d =m/w
D. d =w/v
calculate the density of an objects whose mass is 93.2 g and its volume is 4.67
Answer:
19.9571734475
Explanation:
Mass/Volume= Density
An increase in which of the following does not increase the rate of a chemical reaction?
A. product
B. pressure
C. reactants
D. temperature
Answer:
product
Explanatiion:
Choose all the answers that apply.
The sun _____.
a. creates energy from fission reactions
b. creates energy through fusion reactions
c. transfers heat through radiation
d. is made of hydrogen and helium
e. uses its own mass to create energy
If you have a parallel circuit with a battery (4 ohms), a light bulb (2 ohm), and a fan (3 ohms), how would you find the total resistance of the circuit?
Voltage is the same across each component of the parallel circuit. The sum of the currents through each path is equal to the total current that flows from the source. You can find total resistance in a Parallel circuit with the following formula: 1/Rt = 1/R1 + 1/R2 + 1/R3 +...
Answer:
resistance = 0.9230769230769231
Explanation:
The total resistance can be found by using the following equation:
1 / R = 1 / R1 + 1 / R2 + 1 / R3
HELP PLS THIS IS DUE IN 15 MINUTES PLS PLS PLS!!! I WILL MARK BRAINLIEST IWTH THE BEST ANSWER!!!
List 2 Physical Changes & 2 Chemical Changes and explain why.
Answer:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
Explanation:
Answer:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity.
physical changes are boiling, melting, freezing, and shredding.
Explanation:
Which best categorizes the different types of air.
a
Both warm and cool air have low pressure
b
Warm air has high pressure, cool air has low pressure.
c
Warm air has low pressure, cool air has high pressure
d
Both warm and cool air have high pressure
Answer:
B.
Explanation:
What is the largest contributor to the greenhouse effect?
Answer:
burning of fossil fuels
Explanation:
