The invention of the _____________ was considered the critical invention for easily classifying and organizing Stars by brightness, color, and temperature
Radio Telescope
HR Chart (Hertzsprung- Russell)
Infra red Camera
Nasa Star Modeling Programs
Answer:
radio telescope
Explanation:
We use radio telescopes to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects. We can also use them to transmit and reflect radio light off of planetary bodies in our solar system.
how the remains of plants and animals become fossil fuels. why are they considered nonrenewable resources
Answer:
It takes a very long time for things to become fossil fuel. Hence why it’s called non-renewable
Explanation:
PLS HELP I AM CONFUSED!!!!!!!THESE ARE ALL THE PIONTS I HAVE LEFT!!!
The student mixed up 500ml of salt solution. He weight it and found it mass to be 585g. will his shake up toy work the way that he want it to work?why or why not?
Remember, 1 mL = 1cm
Show your math
Answer:
...
Explanation:
find density of salt solution 585g/500cc = 1.17g/cc
leaves density = 1.25g/cc, stars density = 1.12g/cc
Stars float, leaves sink. since everything is in g/cc, you do not have to worry about the info 1ml=1cc.
density = mass / volume.
density of salt solution = 585g(mass)/500cc(volume)
Which property of physical changes explains why matter is conserved in a physical change? The arrangements of particles do not change, and the bonds between atoms do not break.
Mass, not energy changes in a physical change.
Energy and mass change in a physical change.
The bonds between atoms do not break, it's only the arrangement that changes.
Mass is the amount of matter in an object, and weight is the downward pull on an object due to gravity. Which property of physical changes explains why matter is conserved in a physical change? The bonds between atoms do not break; it is only the arrangement that changes.
hope I helped! :)
Terrence measures the amount of water displaced by various objects when they are dropped into a graduated cylinder of water. By looking at his data, he realizes that the amount of water displaced depends on either the mass or the volume of the object, depending on whether the object sinks or floats.
Which data table includes all the information Terrence needs to come to this conclusion?
Answer:
Y
Explanation:
Logic
5. Fill in the chart to identify three types of chemical changes.
Answer:
1.reaction with energy 2. one substance breaks down 3. reaction to acid and base
Describe the percentages of electromagnetic energy that comes from the sun
A characteristic property is one that remains the same regardless of the amount of matter that is present.
Which of the following is a characteristic property of matter?
Group of answer choices
Density
Mass
Volume
Weight
The picture shows a spoonful of salt being added to a glass of water. What physical property of the salt is being demonstrated?A.
A.
solubility
B.
density
C.
boiling point
D.
melting point
“The use of fossil fuels by human’s is heating up the atmosphere” is an example of a law or theory? Explain your answer in at least 3 sentences.
Answer: Theory
It is a theory which is true because it is not a law. A theory by definition is “ a plausible or scientifically acceptable general principle or body of principles offered to explain phenomena.” A law is “a rule defining correct procedure or behaviour in a sport.“ Therefore since this a scientific fact and it is used/ not against the law it is a theory
Explanation:
Order the list of Earth’s water resources from greatest to least: Rivers; Ocean water (salt); Ice Caps/glaciers; Groundwater
Please help me answer these questions
Answer: B, heredity
Explanation:
Is this a scientific model? Use complete sentences to explain why or why not
Public Domain
Answer:
it is
Explanation:
Fill in the chart to identify how scientists represent matter and chemical changes in matter.
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side
A chemical symbol is a notation of one or two letters representing a chemical element
A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.
Match the following vocabulary words with the correct definitions.
1. amount of matter in an object
matter
2. anything which has mass and occupies space
molecule
3. measurement of the pull of gravity on an object
atom
4. molecule with different atoms chemically united
mass
5. chemical combination of two or more atoms
weight
6. smallest unit of matter
compound
The moon's observed motion across the sky is PRIMARILY due to the
A)
rotation of the moon.
B)
rotation of the earth.
C)
orbit of the moon around the earth.
D)
orbit of the earth around the moon.
Answer:
I think that rotation of the moon is the correct one
Explanation:
C) orbit of the moon around the Earth
A boat is traveling to the right at 300 N, the current is going to the left at 600N. What is the net force and direction?
Scientists approximate that there are 20 billion stars like our sun in the Milky Way.
Why does the sun appear to be brighter than any other star in the Milky Way?
A.the sun is older than all of the other stars in the Milky Way
B.the sun is closer to the earth than any other star in the Milky Way
C.the sun is hotter than any other star in the Milky Way
D.the sun has more energy than any other star in the Milky Way
Answer: B.) the sun is closer to the Earth
Answer:
C
Explanation:
the sun is really hot so that is why
and please answer the questions on my profile please i beg of you its due by 11:59 pm TONIGHT or i get kicked out of school.. pls help..
Which set of diagrams shows a balanced chemical equation?
A: 2 H, 2 O, 2 S and 2 H, 2 O, 3 S. B: 4 H, 2 O, 3 S and 4 H, 2 O, and 1 S. C: 4 H, 2 O, 2 S and 4 H, 2 O, 2 S. D: 2 H, 2 O, 2 S and 1 H, 1 O, 1 S.
A. Diagram A
B. Diagram B
C. Diagram C
D. Diagram D
Thomas thinks that acceleration means “speeding up.” Explain why this is incorrect.
Answer:
Explanation:
Thomas is incorrect because acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
How is salinity affected?
(a) evaporation increases
(c) freezing increases
(d) melting increases
(e) precipitation increases
Where does the energy that causes evaporation come from?
What role does gravity play in the water cycle?
Describe the flow of one molecule of water through the water cycle, beginning in the ocean.
Answer:
A and E.
Explanation:
When water evaporates, it leaves the salt. When rain falls, the salt is diluted. The sun causes the evaporation. The also the sunlight is the energy source, the greatest force propelling the water cycle is gravity. Gravity is the force of attraction between two objects, and Earth’s gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill. Gravity also moves air and ocean water. Also Water travels in a continuous path through Earth called the water cycle. The journey starts in the Earth's oceans. As the Sun heats the ocean, the water evaporates into a gas. The gas meets cooler air, and the gas changes into droplets of tiny water molecules. This process is called condensation. Little droplets of water fall back down to Earth again as precipitation. The precipitation fills up the rivers and various other things and the cycle begins all over again. Now with this being said, there is much more than just this!
Good luck!
Stephen pours a glass of ice water. He gets a phone call before he can drink it. What will happen if he leaves the glass on the counter for 2 hours?
a heat will transfer from the water to the ice until both reach the same temperature
b heat will transfer from the water to the ice until the water is colder than the ice
c heat will transfer from the ice to the water and the ice will stay colder than the
water.
d heat will transfer from the ice to the water and the ice will get warmer than water
Answer:
d im pretty sure
Explanation:
What type of erosion cause a canyon form?
water
wind
ice
Answer:Water
Explanation: none
Drinking water has two sources. It can come from surface water, such as reservoirs or rivers. Or it can come from groundwater where it either naturally surfaces in a spring or where it must be pumped to the surface from a well. Where does your drinking water come from?
82% of drinking water supplies in Ireland are sourced from surface water (rivers and lakes) and 18% comes from groundwater - it depends where you live (quick g00gle search should answer you question)
Our drinking water comes from the underground sources like wells, hand pumps, etc.
What are the sources of water?Sources of water are the places from where the water comes to earth for the uses.
In our houses drinking water comes from the underground sources, through the wells, hand pumps, etc. From that source we get natural water for the drinking purposes.
Hence we get water from underground sources.
To know more about water sources, visit the below link:
https://brainly.com/question/898979
#SPJ2
computers can turn electrical energy into light and sound energy. which other type of energy does a computer produce
A. Thermal Energy
B. chemical energy
C. magnetic energy
D. gravitational energy
What is the average thermal energy of ice?
Answer:Ice doesn’t have a thermal energy.
Explanation:
If the force squeezing two surfaces together is decreased, the force of friction between the two surfaces will most likely what?
Answer:
Decrease
Explanation:
friction is caused by a continues strong force
describe what is happening to rock climbers’ body systems and cells at the small scale.
Answer:
It is being pressured!
Explanation:
The pressure point changes so people aren't used to that certain pressure
As a rock climber climbs higher, the systems and cells experience a decrease in pressure.
Pressure decreases with height. Hence, the higher you go, the lesser the pressure becomes and this may have obvious implications on the cells and systems of a rock climber.
As air pressure decreases at higher altitude, a rock climber may find it difficult to breathe because of the sudden decrease in air pressure hence the respiratory system is affected.
Prolonged exposure to high altitudes may lead to a decrease in the amount of oxygen in blood causing the heart to pump harder.
Learn more: https://brainly.com/question/14191541
Study the image of Earth’s layers. Cross section of layers of the Earth. Inner core equals 1,216 kilometers; Outer core equals 2,270 kilometers. Mantle equals 2,885 kilometers, and consists of lower and upper mantle. Upper mantle is made up by: Asthenosphere at 660 kilometers, Lithosphere at 100 kilometers, Oceanic crust at 5 kilometers, Continental crust at 30 to 40 kilometers. Which statement correctly compares the thicknesses of Earth’s layers? Earth’s mantle is thinner than its oceanic crust. Earth’s outer core is thicker than its mantle. Earth’s continental crust is thicker than its lithosphere. Earth’s lithosphere is thinner than its asthenosphereStudy the image of Earth’s layers.
Answer:
the person on top is right.
Explanation:
I NEED HELP WITH BOTH OF THESE!!!!!!
Answer:
question 5 is the long term, prevailing atmospheric conditions.
Explanation:
I do not know question 4 because I do not live in Utah. So sorry, but good luck!
