Answer:
1 question- Three different things happen when light hits a surface, it can be reflected (bounce off), absorbed or transmitted (pass through). Glass reflects some light but most of the light is transmitted straight through. That's why we can see objects on the other side of a closed window. We say that glass is transparent.
2 question- All materials have what is known as an index of refraction, which is linked to how fast light can travel through the material. As light passes through air and into another clear material (such as glass), it changes speed, and light is both reflected and refracted by the glass
3 question- The energy of a wave is directly proportional to its frequency, but inversely proportional to its wavelength. In other words, the greater the energy, the larger the frequency and the shorter (smaller) the wavelength
4 question- The most dangerous frequencies of electromagnetic energy are X-rays, gamma rays, ultraviolet light and microwaves. X-rays, gamma rays and UV light can damage living tissues, and microwaves can cook them
5 question- Heat can travel from one place to another in three ways: Conduction, Convection and Radiation. Both conduction and convection require matter to transfer heat. Conduction is the transfer of heat between substances that are in direct contact with each other. Thermal energy is transferred from hot places to cold places by convection. Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object as is the case with conduction and convection. Heat can be transmitted through empty space by thermal radiation often called infrared radiation.
I hope this helps!
Answer: Three different things happen when light hits a surface, it can be reflected (bounce off), absorbed or transmitted (pass through). Glass reflects some light but most of the light is transmitted straight through. That's why we can see objects on the other side of a closed window. We say that glass is transparent. All materials have what is known as an index of refraction, which is linked to how fast light can travel through the material. As light passes through air and into another clear material (such as glass), it changes speed, and light is both reflected and refracted by the glass.
Explanation:
3.04 in science, compounds
Name and Title:
Include your name, instructor's name, date, and name of lab.
Objectives(s):
In your own words, what is the purpose of this lab?
Hypothesis:
In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.
Data:
Record the composition of each of your compounds below. Be sure to include the number of atoms for each element. An example has been supplied for you.
Compound Name Chemical Formula Sodium (Na) Atoms Calcium (Ca) Atoms Hydrogen (H) Atoms Oxygen (O) Atoms Carbon (C) Atoms Chlorine (Cl) Atoms
Ex: Sodium
hypochlorite NaClO 1 0 0 1 0 1
Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.
Using two to three sentences, summarize what you investigated and observed in this lab.
Why do you believe knowing how elements and compounds react together is essential in everyday matters?
Some elements are more "reactive" than other elements; why do you think this is?
Choose one of the compounds from the table and explain how you know the numbers of atoms in your formula.
Is it possible for two different compounds to be made from the exact same two elements? Why or why not? With a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?
Name and Title:
name, teacher's name, date, chemical components lab.
Objectives(s):
The purpose of this lab was to use elements and make chemical compounds.
Hypothesis:
If I use sodium, carbon, and hydrogen, then I can make at least 5 new compounds in 5 minutes.
Procedure:
The independent variable is the number and types of elements I picked for my compounds. The dependent variable is the types of compounds made.
Data:
Record the composition of each of your compounds below. Be sure to include the number of atoms for each element. An example has been supplied for you.
Compound Name
Sodium hydride
Chemical Formula
NaH
Sodium (Na) Atoms
1
Calcium (Ca) Atoms
0
Hydrogen (H) Atoms
1
Oxygen (O) Atoms
0
Carbon (C) Atoms
0
Chlorine (Cl) Atoms
0
Tricarbon (c3) Atoms (MY TEACHER TOLD ME TO ADD THIS ONE)
0
Compound Name
Methylene (carbene)
Chemical Formula
CH2
Sodium (Na) Atoms
0
Calcium (Ca) Atoms
0
Hydrogen (H) Atoms
2
Oxygen (O) Atoms
0
Carbon (C) Atoms
1
Chlorine (Cl) Atoms
0
Tricarbon (c3) Atoms (MY TEACHER TOLD ME TO ADD THIS ONE)
0
Compound Name
Sodium carbide
Chemical Formula
Na2C2
Sodium (Na) Atoms
2
Calcium (Ca) Atoms
0
Hydrogen (H) Atoms
0
Oxygen (O) Atoms
0
Carbon (C) Atoms
2
Chlorine (Cl) Atoms
0
Tricarbon (c3) Atoms (MY TEACHER TOLD ME TO ADD THIS ONE)
0
Compound Name
Diatomic carbon
Chemical Formula
C2
Sodium (Na) Atoms
0
Calcium (Ca) Atoms
0
Hydrogen (H) Atoms
0
Oxygen (O) Atoms
0
Carbon (C) Atoms
2
Chlorine (Cl) Atoms
0
Tricarbon (c3) Atoms (MY TEACHER TOLD ME TO ADD THIS ONE)
0
Compound Name
Hydrogen gas
Chemical Formula
H2
Sodium (Na) Atoms
0
Calcium (Ca) Atoms
0
Hydrogen (H) Atoms
2
Oxygen (O) Atoms
0
Carbon (C) Atoms
0
Chlorine (Cl) Atoms
0
Tricarbon (c3) Atoms (MY TEACHER TOLD ME TO ADD THIS ONE)
0
Compound Name
acetylene
Chemical Formula
C2H2
Sodium (Na) Atoms
0
Calcium (Ca) Atoms
0
Hydrogen (H) Atoms
2
Oxygen (O) Atoms
0
Carbon (C) Atoms
2
Chlorine (Cl) Atoms
0
Tricarbon (c3) Atoms (MY TEACHER TOLD ME TO ADD THIS ONE)
0
Compound Name
Tricarbon
Chemical Formula
C3
Sodium (Na) Atoms
0
Calcium (Ca) Atoms
0
Hydrogen (H) Atoms
0
Oxygen (O) Atoms
0
Carbon (C) Atoms
3
Chlorine (Cl) Atoms
0
Tricarbon (c3) Atoms (MY TEACHER TOLD ME TO ADD THIS ONE)
0
Compound Name
Diamond
Chemical Formula
C,Crystal
Sodium (Na) Atoms
0
Calcium (Ca) Atoms
0
Hydrogen (H) Atoms
0
Oxygen (O) Atoms
0
Carbon (C) Atoms
1
Chlorine (Cl) Atoms
0
Tricarbon (c3) Atoms (MY TEACHER TOLD ME TO ADD THIS ONE)
3
worked this out and it should be right
Need help!
Describe the moon's position relative to Earth and the sun during full moon, when the moon appears round and bright.
What is the difference between the way matter responds to a transverse wave and a longitudinal wave?
A. Matter moves in the same direction in a longitudinal wave, and at right angles to the direction of a transverse wave.
B. Matter moves at right angles to the direction of a longitudinal wave, and at right angles to the direction of a transverse wave.
C. A longitudinal wave does not need matter through which to travel, while a transverse wave does.
D. A longitudinal wave needs matter through which to travel, while a transverse wave does not.
help i am confused about this riddle.IF NOTHING IS FASTER THAN LIGHT HOW DID THE DARK GET THERE FIRST
Answer:
because darkness is the absence of light, so that means darkness was there before the light came! :)
Explanation:
Only 5 questions plz answer.
Can someone help me with this science question
Isaac Newton believed that light was made of
waves.
particles.
dust.
gravity.
Answer:
I believe the answer is Particles
Explanation:
let me know if i'm wrong
Isaac Newton believed that light was made of particles.
What is light?Light or visible light is electromagnetic radiation that can be perceived by the human eye.Visible light is usually defined as having wavelengths in the range of 400 – 700 nanometers (nm), corresponding to frequencies of 750 – 420 terahertz, between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths)Given is the theory of light by Sir Isaac Newton.
Corpuscular Theory →
According to Newton's corpuscular theory of light, light is composed of very tiny, elastic and rigid particles called corpuscles. When this corpuscles enters into our eye, we get the sensation of light or sensation of vision.Therefore, Isaac Newton believed that light was made of particles.
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I need help ;-;
"Compare the first and third quarter of the moon cycle as seen from the Northern Hemisphere. You must discuss the relative positions of the sun, moon, and earth in your response"
what do i wright: You are a drop of water going through the water cycle. Where do you go? How do you get there? What processes do you go through? Include at least three phases of the water cycle , i know the phases of the water cycle
Explanation:
As the Sun heats the ocean, the water evaporates, turning into a gas. Sometimes this gas meets cooler air, and the gas changes into drops of water. This process is called condensation. Drops of water fall back down to Earth again as precipitation, which can be in the form of rain, snow, sleet, or hail
three phases of water cycle are
evaporation, condensation, precipitation
I ain't sure please check the answer...
In a computer simulation, Juan moves a magnet (Magnet 1) closer to another magnet (Magnet 2) that cannot move. Which statement accurately describes the change in potential energy?
a
The potential energy does not change because the magnets in the system do not change.
b
The potential energy increases because Magnet 1 moves against the magnetic force.
c
The potential energy decreases because Magnet 1 moves against the magnetic force.
d
The potential energy decreases because Magnet 1 moves in the same direction a
Answer:
C
Explanation:
The potential energy decreases because Magnet 1 moves against the magnetic force. If it was increased it would be kinetic
When Magnet 1 moves against the magnetic force, the potential energy will increase.
Potential energy:
It is the enregy of present in the object or system due to the position of the different parts of the system.
Here, when one magnet bring closer to another magnet the magnetic force will increase.
Therefore, when Magnet 1 moves against the magnetic force, the potential energy will increase.
To know more about magnet,
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Water has many properties important to life. The following are all properties exhibited by water. Which one is NOT due to the polar nature of water molecules?
A. clarity
B. adhesion
C. cohesion
D. viscosity
Answer:
B
Explanation:
evaluate the statement heavy things sink and light things float. is the statement true or false? if false rewrite the statement to be true
Answer:
False
Explanation:
It depends on the density of an object, not the wight.
Answer: it’s false
Explanation: false
A ship is heavy, but it sinks, right? If something sinks or floats is based off of its density.
Things that are less dense than the liquid they are on will float
Which of these statements about the sun's energy is true? (5 points)
It is transferred unevenly to land and water.
It is transferred evenly to air and water.
It is transferred to water through air.
It is transferred only to air.
2.
(03.01 LC)
What is the main cause of wind? (5 points)
Increases in the global temperature
Severe weather
Rapid temperature changes in ocean currents
The difference in air pressures
3.
(03.01 MC)
What will most likely happen when a warmer air mass exists above a polar ice sheet? (5 points)
The temperature of the ice sheet will be lowered.
Heat will be transferred from the air mass to the ice.
The air mass will exert high pressure and rise upwards.
Air higher up in the mass will become cooler than air lower down.
4.
(03.01 HC)
The image below shows a certain type of global wind: (5 points)
The Earth is shown as a circle. Equator is shown and labeled at 0 degrees. 30 degrees north and south latitudes are shown and labeled. 60 degrees north and south latitudes are shown and labeled. Curved arrows are shown pointing from 30 degrees north and south latitudes towards the equator.
What best describes these winds?
Polar easterlies caused by air above poles being relatively warmer
Polar easterlies caused by air above poles being relatively cooler
Trade winds caused by air above equator being relatively warmer
Trade winds caused by air above equator being relatively cooler
5.
(03.02 LC)
Which of these is an example of the climate of a region? (5 points)
Continental
Foggy
Overcast
Sunny
6.
(03.02 MC)
Which of these can be determined based on the knowledge about climate? (5 points)
Plan a barbeque party or not
Plan an outdoor activity or not
Choice of foods and drinks to have
Choice of building design and materials
7.
(03.03 MC)
Which weather event is most likely to occur if there are warmer than average ocean waters in the Pacific? (5 points)
Flooding in the southern United States due to El Niño
Drought in the southern United States due to La Niña
Wet conditions in the Pacific Northwest due to El Niño
Weak trade winds due to La Niña
8.
(03.03 HC)
Study the following ocean currents map.
An ocean currents map is shown. On the map the locations for San Francisco, California and Norfolk, Virginia are marked. There is a looping current from the north past San Francisco and a looping current from the south near Norfolk
Which statement is most likely correct about the average temperatures in San Francisco, California as compared to Norfolk, Virginia? (5 points)
It is higher in Norfolk because of the cool ocean currents from the north.
It is higher in Norfolk because of the warm ocean currents from the south.
It is lower in San Francisco because of the cool ocean currents from the south.
It is lower in San Francisco because of the warm ocean currents from the north.
9.
(03.04 MC)
What type of climate is most likely expected in locations between the poles and the equator that have high amounts of water vapor in the air? (5 points)
Dry
Low humidity
No rain
Seasonal storms
10.
(03.04 HC)
Explain how precipitation happens. Use complete sentences and give at least two supporting details. (7 points)
11.
(03.04 MC)
Which of these would be part of an emergency plan before a hurricane? (5 points)
Unfasten the boats
Place storm shutters on
Drain all fuel from the car
Clear drains of dry leaves
12.
(03.05 LC)
Which is the best time to apply sunscreen? (5 points)
Before going to bed
Just after going out in the sun
1 hour after going out in the sun
30 minutes before going out in the day
13.
(03.05 MC)
Why should extra precautions against sun exposure be taken when boating? (5 points)
Water cancels out most sunscreens.
UV rays are blocked over land, but not over water.
The heat of the water increases potential skin damage.
The water reflects UV rays, adding to exposure.
14.
(03.05 LC)
Where is the ozone layer located? (5 points)
Exosphere
Mesosphere
Stratosphere
Troposphere
15.
(03.05 MC)
Maria described two layers of Earth's atmosphere.
Layer A: Weather changes take place here
Layer B: Location where weather balloons collect data
Which statement is most likely true? (5 points)
Layer A is the thermosphere and Layer B is the exosphere.
Layer A is the exosphere and Layer B is the thermosphere.
Layer A is the stratosphere and Layer B is the troposphere.
Layer A is the troposphere and Layer B is the stratosphere.
If you have done this on flvs pls give me the answers
Answer:
The answer to this is It is transferred to water through air.
Explanation:
This is an example of a(n)
A) Aquatic biome.
B) Terrestrial biome.
C) Aquatic biosphere.
D) Terrestrial Biosphere.
Answer:
Its A.
Correct me if I'm wrong.
What's an interesting fact about Aristotle?
Answer:
Image result for What's an interesting fact about Aristotle?
Interesting Aristotle Facts: 1-5
Aristotle was born somewhere around 384 BCE. ...
His father was Nicomachus. ...
Nicomachus died when Aristotle was a young boy. ...
After the death of Nicomachus, Proxenus – husband of Aristotle's sister Arimneste, became the guardian of young Aristotle.
Which wave has a wavelengh that is most likely seen as red light?
Answer:
D.
Explanation:
Red light has wavelengths around 620 to 750 nm.
I am not good at mysteries so please help!!
Answer:
The nephew
Explanation:
The dog's foot prints are overlapping the shoes that are overlapping the tire marks from 3 different tires, if the dog is his seeing dog then it would make sense that the dog's foot prints are next to his and they're going in the same direction, and since the dog's footprints overlap the others it means that they were there last.
People were confused so I'll resay it. The dog is the nephew's seeing dog, so he walks beside him. And if the dog's foot prints are overlapping all of the other's, that means the dog was there after all of the rest of them, and if the nephew is with the dog then the nephew was there last.
Decreasing the mass or the speed of the cart? HELP QUICK
Question 1 options:
Kinetic energy is least as you are moving past the bottom of the swing and going back up to the highest point
Kinetic energy is least at the lowest point of your swing when you are closest to the ground
Kinetic energy is the least when you are halfway between the highest point of the swing and the bottom
Kinetic energy is least at the at the top of the swing when you are still for a moment just before falling again
Answer:
Kinetic energy is least at the at the top of the swing when you are still for a moment just before falling again
Explanation:
Your 20-kg brother Mickey is on a see-saw. If you have a mass
of 50-kg and are 2 meters away from the center of the see-
saw, how far out would Mickey have to sit if he wants to apply
the same force onto you that you apply onto him? meters
Answer:
5
Explanation:
To apply the same force as the person, the brother have to sit at a distance of 5 m.
What is meant by torque ?
Torque is defined as the rotational analogue of force. It is the cross product of force and the displacement of the object.
Here,
Mass of the person, m₁ = 50 kg
Mass of the brother, m₂ = 20 kg
Distance of the person, d₁ = 2 m
For the see-saw to get balanced, the torque applied by the two persons each side must be equal.
τ₁ = τ₂
where τ₁ is the torque applied by the person and τ₂ is that applied by the brother.
So, F₁d₁ = F₂d₂
m₁g x d₁ = m₂g x d₂
m₁d₁ = m₂d₂
Therefore, distance of the brother,
d₂ = m₁d₁/m₂
d₂ = 50 x 2/20
d₂ = 5 m
Hence,
To apply the same force as the person, the brother have to sit at a distance of 5 m.
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When writing a goal it is not necessary to have an end point? Question 4 options: True False