Answer:
- Independent Variable: Sand, water (variable that changes)
- Dependent Variable: Heat (Sun)
- Control Variables: Environment, container, therometer
Hypothesis: If the sand and water both receive solar radiation, the sand will heat up faster.
Materials:
- 2 thermometers
- 2 plastic boxes (These should be identical)
- Sand
- Water
Procedure:
- Pour sand into one of your plastic boxes to a depth of two inches. Pour water into the other plastic box to a depth of two inches. The sand box will represent land while the water box represents a body of water.
- Place the two boxes in a location that receives direct sunlight and place one therometer in the sand, and the other in the water.
- For a period of 30 minutes, check the temperature of both boxes every 10 minutes. Record the temperatures in a chart/graph
Observations: The temperature of the land (sand) was higher than the water.
Results: Land absorbs much more solar radiation than water, due to the fact that most land surfaces are darker than water, thus attracting heat. Water typically reflects solar radiation that reaches its surface back to the atmosphere. As a result of land absorbing more solar radiation, the land also retains more heat. This validates my hypothesis of the land (sand) heating faster.
Explanation:
What is the chemical test for water
Copper(II) sulfate in its purest form is white. Because it is devoid of water, it is also known as anhydrous copper(II) sulfate. A sample of copper(II) sulfate becomes blue when water is present.
• Temperature measurements
Temperature testing aids in determining the pace of biochemical reactions in an aquatic environment, as well as whether they can occur at all. If the water temperature is too high, the water's ability to contain oxygen is reduced, and organisms' ability to withstand certain contaminants is reduced.
• Checking the pH level
This instrument determines the acidity of water. The majority of aquatic species can only thrive in a pH range of 6 to 8.
• Test for chloride
Chloride may be found in both fresh and salt water. Mineral dissolution and industrial pollutants, on the other hand, can worsen its levels.
• Testing for salinity
The total amount of non-carbonate salts dissolved in water is calculated. The salinity of your groundwater can tell you how salty your topsoil will become as the water table rises.
• Oxygen Dissolved Test
The amount of oxygen dissolved in water is measured with this device. Aquatic life can't conduct cellular respiration without it, hence it's an important indication of water quality.
• Test for turbidity
Measures the quantity of suspended particle matter in the water, or, to put it another way, how clear the water is. When there is a lot of turbidity in the water, photosynthesis suffers because light can't get through, which raises the water temperature.
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Two environmental issues of restaurants are the following:
A. Crowding and air quality
B. Crowding and food quality
C. Energy consumption and refrigerants
Answer:
Answer down below
Explanation:
if it has to be 2 of these I think it would be A and B but if it is only one Answer it would be B
Crowding and food quality are two environmental issues of restaurants.
What is the meaning of environmental issues?Environmental issues are defined as harmful effects to Earth and its natural systems due to the actions of humans.
The food supply chain and restaurant customer experience generate a lot of waste – from food waste to plastic waste, and more. Unfortunately, one-third of the world's food gets wasted. This waste alone amounts to 8% of the world's greenhouse gas emissions.
Hence, option B is correct.
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Weather fronts tend to produce changes in the weather
True
False
Answer:
True
Explanation:
What is needed for photosynthesis to take place? (Select all that apply.)
carbon dioxide
glucose
energy
water
all but energy i think but if not its a and d
Explanation:
Answer:
carbon dioxide, water, and sunlight
Explanation:
These things .is needed for photosynthesis to take place. By the way, sunlight is Energy.
As the temperature of a gas increases, explain what happens to its density and why.
Answer:
When a gas is heated, the molecules move faster, bump into each other, and spread apart. Because the molecules are spread apart, they take up more space. They are less dense.
please right a lot if you can thanks
Answer:
The terrarium model shows the many different aspects of life. The dirt shows the geosphere, which is the ground thaat the plant can grow in. The biosphere is represented by the plant growing, and the hydrosphere is the water that you use to water the plant, and the condensation that will gather on the lid. The atmosphere is the air inside the jar.
Explanation:
Each of the above show how the environment works.
Why are energy jobs on the rise? (Look at the world around you and think about the big picture.)
A. Both a and c
B. There are unlimited natural resources
C. There are limited natural resources that we need to maximize usage of
Answer:
c
Explanation:
The number of jobs in renewable energy worldwide increased in 2020, despite the huge economic disruptions caused by the pandemic, with the growing industry holding up better than fossil fuels. so which means reasourses are limited because of the pandemic and prises on thing rising.
Answer:
c (There are limited natural resources that we need to maximize usage of)
An object has a mass of 46.5 g and a volume of 55 mL. What is its density?
Answer:
0.84545454545 g/ml
Explanation:
to find density do mass/volume
Thermal energy circulates through the atmosphere and oceans by the process of convection. Which source of energy drives convection?
a.
nuclear energy
b.
electromagnetic energy
c.
gravitational potential energy
d.
solar energy
How do we draw a lewis dot diagram (electron dot diagram) for sodium ethyl xanthate? Please I'll mark brainliest for the correct answer.
Refer to the attachment
Energy-efficient jobs are growing! One job includes being a conservation scientist, which is part of the STEM job cluster. What is the best definition for a conservation scientist?
A. manage, improve, develop new machines to cook faster and more evenly.
B. develop, document, and research new ways to move people into careers of interest
C. manage improve, and protect natural resources to maximize their use without damaging the environment.
A conservation scientist is one who manage improve, and protect natural resources to maximize their use without damaging the environment. The correct option is C.
What is conservation scientist?A scientist is defined as a person who always studies systematically and uses research and evidence to prepare hypotheses. A conservation scientist is the person who protects, manages and improves the natural resources.
It is the conservation scientist who supervise the forest and give instructions to the workers and technicians who do the labour work for maintaining the forest. They also analyze the data on forest and soil quality and notice any damage to trees caused by fires.
The conservation scientist is also involved in choosing and preparing sites to plant new trees and it is their duty to remove the timber with minimum environmental damage. They also participate in the suppression of the forest fire.
Thus the correct option is C.
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You have a sample with a volume of 55.7 mL and a mass of 67.9 g. Will this sample float in water? Why or why not?
Answer:
No it will not
Explanation:
It will not float because the density is 1.21903052065, it needs to be less than 1 to float
An object’s mass is determined to be 32.5 g. When the object is placed in a graduated cylinder containing 175 mL of water, the water in the cylinder rises to a level of 187.5 mL. What is the density of the material?
When the object is placed in a graduated cylinder containing 175 ml of water, the water in the cylinder rises to a level of 187.5 ml , this implies that volume of content in the container has increased , the increased volume is volume of the object placed
So, Volume of object
= Increased Volume - Initial volume
= > 187.5 -175
= > 12.5 ml
Since 1 ml = 1 cm³ we can write
[tex]\quad[/tex]12.5 ml = 12.5 cm³
Now,
[tex]\green{ \underline { \boxed{ \sf{Density= \frac{Mass}{Volume}}}}}[/tex]
Putting Values -
[tex]\begin{gathered}\\\implies\quad \sf Density = \frac{32.5}{12.5} \\\end{gathered} [/tex]
[tex]\begin{gathered}\\\implies\quad \sf Density = \frac{325}{125} \\\end{gathered} [/tex]
[tex]\begin{gathered}\\\implies\quad \sf Density = 2.6 g/cm^3 \\\end{gathered} [/tex]
>> The density of the material is 2.6 g/cm³
You will observe the orbits and you have to determine how many planets are in the habitable zone and how many are orbiting successfully. Based on the mass of the star and the placements of the planets, planets may swerve into the star and vanish, collide with each other and vanish, float out of orbit, or all orbit successfully. You will record this information and each planet's orbit in your data table for each trial. If the mass of the sun is 1x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
If the mass of the sun is 2x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
If the mass of the sun is 3x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
Answer:t of orbit, or all orbit successfully. You will record this information and each planet's orbit in your data table for each trial. If the mass of the sun is 1x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
If the mass of the sun is 2x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
If the mass of the sun is 3x, planets will fall into the habitable zo
Explanation:
label the different parts of the rock cycle where igneous, sedimentary, and metamorphic rock are formed (FIXED)
Answer:
The key processes of the rock cycle are crystallization, erosion and sedimentation, and metamorphism.
Explanation:
Which fossil fuel does the United States have the most reserves of?
HELP QUICK
Select the Independent, Dependent and Controlled Variables
Answer:
The independent variable is graphed on the x-axis. The dependent variable, which changes in response to the independent variable, is graphed on the y-axis. Controlled variables are usually not graphed because they should not change.
Answer:
The independent variable is graphed on the x-axis. The dependent variable, which changes in response to the independent variable, is graphed on the y-axis. Controlled variables are usually not graphed because they should not change.
Explanation:
You have a substance with a length of 2 cm, width of 3 cm, and a height of 4 cm. Its density is known to be .5 g/cm3. What is the mass of the sample you have?
Explanation:
They are related by the the density triangle.
Explanation:
They are related by the the density triangle.
mcdn1.teacherspayteachers.com
d =
m
V
m = d×V
V =
m
d
DENSITY
Density is defined as mass per unit volume.
d =
m
V
Example:
A brick of salt measuring 10.0 cm x 10.0 cm x 2.00 cm has a mass of 433 g. What is its density?
Step 1: Calculate the volume
V = lwh = 10.0 cm × 10.0 cm × 2.00 cm = 200 cm³
Step 2: Calculate the density
d =
m
V
=
433
g
200
c
m
³
= 2.16 g/cm³
MASS
d =
m
V
We can rearrange this to get the expression for the mass.
m = d×V
Example:
If 500 mL of a liquid has a density of 1.11 g/mL, what is its mass?
m = d×V = 500 mL ×
1.11
g
1
m
L
= 555 g
VOLUME
d =
m
V
We can rearrange this to get the expression for the volume.
V =
m
d
Example:
What is the volume of a bar of gold that has a mass of 14.83 kg. The density of gold is 19.32 g/cm³.
Step 1: Convert kilograms to grams.
14.83 kg ×
1000
g
1
k
g
= 14 830 g
Step 2: Calculate the volume.
V =
m
d
= 14 830 g ×
1
c
m
³
19.32
g
= 767.6 cm³
What are the ways humans use, collect, and distribute renewable and nonrenewable natural resources?
Your answer should include at least six complete sentences to explain the claim, evidence, and reasoning.
Answer:
Air and water pollution, damage to public health, wildlife and habitat loss, water use, land use, and global warming emissions.
Explanation: HOPE THIS HELPS!!!!Answer fast and correct!
Answer:
A. Provide both heat and power to homes
Imagine that you are in charge of helping a town named
Greenville choose the form of energy best suited to the
needs and preferences of its citizens. Use this information
to help you make a decision:
• The people of Greenville want to reduce their reliance
on coal for electricity
• Greenville is located far from any coastlines.
• Greenville has a large amount of productive farmland.
• Greenville weather is calm for much of the year.
Which form of energy would best suit Greenville's needs and preferences?
A. Natural gas
B. Biomass
ОООО
C. Tidal power
OD. Wind power
SUBMIT
Answer:
Biomas is the answer
I am sure about it
just go for it
What are some of the benefits of hydropower? select all that apply
Select 3 correct answer(s)
Question 2 options:
It can also provide flood control and water supply
It is renewable and reliable
It can prevent fish from swimming upstream
It reduces the amount of carbon dioxide released into the atmosphere during energy production
Answer: It can provide flood control and water supply. It is renewable and reliable. It reduces the amount of carbon dioxide released into the atmosphere during energy production. I believe these are the answers.
Watch the following videos on molecule mixing encapsulators:
Rockwell Retro Encabulator
Virtual Retro Proto Turbo Encabulator
Then answer the following questions:
1) What is the purpose of the 6 hydrotropic marcel veins in the system?
2) Why is the non-reversible tremie pipe so necessary to the main function of the encapsulator?
3) Do you believe it was a good idea to use the technology of the encapsulator to inverse the current in unilateral phase detractors? Why or why not?
Answer:
here you go
Explanation:
A sample of a pure substance with a density of 3 g/mL is separated into two pieces. One piece has a mass of 50 g and the other piece has a mass of 25 g.
What is the volume of the smaller one?
Answer:
8.3ml
Explanation:
to get volume u have to divide 25g over the density, i rounded to the nearest tenth, if you don't want to then write out the full number with all the decimals
Only answer if you know 100% its correct. this means if your'e NOT sure, don't answer.
Answer:
D. recycling aluminum cans and glass bottles
Explanation:
it's the only one that makes sense because if its a short trip you should walk, you should use reusable bags, and turn off the water while brushing your teeth.
Hope this helps and have a wonderful day/night/afternoon
Answer:
d. recycling aluminum cans and bottles....
Explanation:
this helps to conserve the materials needed to make those objects, which can then be used to make something else...
Hope this helps!
-heyo
should people use crispr to change human traits
Answer:
What do YOU think?
Explanation:
This question is asking for an opinion. The word should is included.
Manufacturers who meet the ENERGY STAR standards get to use the ENERGY STAR logo on their products and advertising. Consumers, however, do not get the guarantee their products meet those standards
A. True
B. False
the arrows in the diagram below show the circulation of air on a sunny day. based on this diagram, what type of local wind would occur?
A. a sea breeze because of the warm air from the land rises and the cool air from the water comes in.
B. a sea breeze because of the warm air from the water rises and cool air from the land comes in.
C. a land breeze because the warm air from the water rises and the cool air from the land comes in.
D. a land breeze because the warm air from the land rises and the cool air from the water comes in.
Answer:
A
Explanation:
Sea breeze because the warm land air rises and the cool sea air come in
Hypothesis and Data Collection Part A The image shows three different liquids: water, water with salt, and vinegar. The pH of each liquid was tested as shown. Use the scale to determine the pH value of each of the liquids. Record these values in the chart provided. Under the chart, make a prediction about what will happen when a seashell is placed in each container.
Answer:
The water would be neutral, (usually 7). The salt water would be the same (7) and the vinegar would be very acidic. (probably 2).
Explanation:
Only answer if you know 100% it's correct. this means if you're not sure, DON'T answer.
Answer:
D is the answer
Explanation:
First of all, conservation is when you conserve resources, or use them less, to be better for the environment. Using a gas powered car does not, as carbon monoxide and other toxic gases are sent into the atmosphere. Using a disposable bag is bad because the plastic is sent away to the environment every time you shop. Leaving water running when you brush your teeth wastes water and is bad for the environment. Recycling aluminium cans and glass bottles is good for the environment, and is conserving resources because the cans and bottles are reused, so instead of wasting, you are reusing.
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