Science 8 - Electromagnetic Spectrum Worksheet

Science 8 - Electromagnetic Spectrum Worksheet

Answers

Answer 1

Answer:

1. Electromagnetic spectrum

2. Electromagnetic radiation

3. Radiant energy

4. Infared  waves

5. Electricmagnetic radiation or Infared waves

6. Radio waves

7. Gamma rays

8. Radio waves

9. Ultraviolet rays

10. This is because it doesn’t contain water or a substance.

11. You should use sunscree and a hat to protect your skin from UV light that might  cause skin cancer.

Hope this helps


Related Questions

No links, i will report any absurd answers. Make it a paragraph please- ill give branliest to the best answer

Answers

Wait, wait, wait. What are we supposed to do here? What are the directions and I'll try to comment an answer. Do I write a paragraph about one of the two paragraphs given?
nehshfkajz
Find it there

The Humbolt squid can travel 410 meters in 60 seconds. The squids average speed is ____. (Round to the nearest tenth)

Answers

Answer:

They swim at speeds up to 24 km/h (15 mph; 13 kn).

Explanation:

The answer to your problem is 6.8 meters

Using the periodic table, determine which element these characteristics MOST LIKELY describe.


A(fluorine) (B iodine ) D (oxygen) C (sodium)

Answers

Answer: A) F

B) I

C) O

D) Na

Explanation: not sure if this is what ur asking for but those are the symbols

ill give 50 points aNd brainiest to who ever gives the best answer, its due in 30 minutes , please help

Explain in 200 words the process that causes dew to form on blades of grass.

no links or saying random things.
dont answer just for points i will report ur answer.

Answers

Answer:dew is formed on grass

Explanation:Dew forms when the object, such as the glass, cools down to the dew point temperature. Water molecules in the air continually bombard surfaces, like blades of grass. ... If the object gets cold enough, and there is enough moisture in the air, condensation is much greater than evaporation and the film grows into dew drops.

Answer:

Hope the answer helps you!!

Have A nice day!!

Pls mark as Brainliest

Explanation:

Dew forms when the object, such as the glass, cools down to the dew point temperature. Water molecules in the air continually bombard surfaces, like blades of grass. ... If the object gets cold enough, and the air contains enough moisture, condensation exceeds evaporation, and the film grows into dew drops

As fall begins, we have lots of mornings with dew on the grass. To explain this, we start with the fact that air contains water in the gas phase, called water vapor. Dew is made of liquid water that has condensed from that water vapor.

Dew occurs when objects cool, such as when drops of liquid form on the outside of an ice-cold drink glass. Dew forms when the object, such as the glass, cools down to the dew point temperature.

Water molecules in the air continually bombard surfaces, like blades of grass. Some of the molecules stick, forming a very thin film of water. This film may not last long, as the water is also evaporating. The evaporation rate depends on the water temperature, which equals the temperature on the grass.

So condensation depends on the state of the atmosphere (primarily temperature and moisture), while evaporation depends on the temperature of the object. If the object gets cold enough, and the air contains enough moisture, condensation exceeds evaporation, and the film grows into dew drops.

Each night the weather report includes the temperature and the dew point temperature. If the two temperatures are close, dew is likely during the night. Because wind and cloudy skies keep the ground from cooling, dew also tends to form on calm nights with clear skies.

Okay, I have three more questions.
1.) When a gas or liquid is heated, it warms, expands, and blank because it is blank dense.
2.) When a gas or liquid is cooled, it becomes blank dense.
3.) As the warm gases and liquids rise and cool gases and liquids sinks, it creates a blank.

Answers

When a liquid or a gas is heated, it expands and becomes less dense, so it rises, while the cooler, denser liquid or gas sinks. (Not sure if this helps but this is what I hit)
1. Less
2. More
3. Convection current
I am unsure if 3 is correct

Draw a motion time graph. Write a story to go along with your graph

Answers

Ignore my not so good art skills lol

Density of iron is 800 kg per cubic meter . calculate the mass of iron contained by a 5 cubic meter of iron block . Also calculate it's relative density..​

Answers

Answer:

this is your answer look it once.

Answer:

hope it is helpful to you

explanation is in the attachment

A 3-kg rock falls for 5 sec. What is its speed after falling for 5 sec? Reminder - Acceleration due to gravity, on Earth = 9.8 m/s/s

Please answer asap

Answers

Here too when an object is dropped, we know the initial velocity is zero when in free fall. So V =g*t this implies V= 9.8 *5=49m/s..... do you get it?

Calculate the energy transferred by a 12V hairdryer, running on a current of 0.50A, that is left on for 8.0 minutes.

Answers


Step 1
List all the information in symbol form and change into appropriate and consistent SI units if required.
V=12V
I=0.5A
t = 8.0 minutes
= 8 × 60
= 480s
E=?
Step 2
Use the correct formula.
E=IVt
Step 3
Calculate the answer by putting the numbers into the formula.
E = IVt
= 0.5 × 12 × 480
= 2880J
The answer is 2880J :) hope this helps!

NO MFKN LINK AND YOU WILL ET THE BRAINLIEST IF CORRECT!!!
10.A force that is applied to an object by a person or another object is called?
(10 Point)

A. Applied Force

B. Unbalanced Force

C. Balanced Force

Answers

Answer:

That is-

A. Applied Force

hope this helped! :)

A Applied Force
If its not A den its
C but I think its A

An archer shot a 0.07 kg arrow at a target. The arrow accelerated at 4,000 m/s2 to reach a speed of 50.0 m/s as it left the bow. During this acceleration, what was the net force on the arrow?
A) 280 N
B) .0000175 N
C) 57,142 N
D) 3.5 N

Answers

the answer is A ) 280 N

The net force which has to be applied on the arrow of 0.07kg to accelerate at the rate of 4000m/s² is 280N. Thus, the correct option is A.

What is Force?

A force is an influence which can be a push or a pull that can change the motion of an object. A force can cause an object with some mass to change the velocity, i.e., results into acceleration. A force is a vector quantity as it has both the magnitude and direction.

Force applied on an object can be calculated by the formula:

f = m × a

where, f = force applied,

m = mass of the object,

a = acceleration of the object

Therefore, the force applied on the arrow is:

f = m × a

m = 0.07kg

a = 4000m/s²

f = 0.07 × 4000

f = 280N

Therefore, the correct option is A.

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What is a disadvantage of using nuclear power to produce electricity?

A.
Nuclear waste must be safely stored for many years.

B.
Nuclear fission produces less energy than burning coal or oil.

C.
Nuclear waste must be burned which produces carbon emissions.

D.
Nuclear fission releases more air pollution than burning coal.

Answers

Answer:

A

Explanation:

This is a written question.
No link answers please!!!

1.Predict the change seen in the balloon in the freezer

2.Explain your prediction

3.Use the equation to provide additional support for your prediction

Answers

Answer:

2

Explanation:

it freezes from liquid to solids

What inferences can you make about the melting points of the different substances and the motion of their particles, based on the data?

Answers

Here’s the answer now hand over the brainilyiest

The wax has the greatest melting point than butter and cheese after the wax the cheese has the greater melting point than butter.

Melting point is the state at which the solid is converted into liquid on application of heat. Wax has greatest force of attraction among the wax particles which increases the melting point of the wax, that means higher temperature is required to break the bonds between the wax atoms. Butter has the lowest melting point, there is weak force of attraction between butter atoms the bonds between them break because of application of very little amount of heat. On application of heat on the cheese initially the cheese cube does not change in shape but become flattened due to application of heat. Hence, the wax has the greatest melting point than butter and cheese after the wax the cheese has the greater melting point than butter.

Learn more about melting point:

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help please rlly easy

Answers

Answer:

If its that easy do it yourself not tryin to be mean but this is just a stem and leaf diagram

Explanation:

NO MFKN LINK
9.The distance something travels in a certain amount of time, such as 45mph, is
(10 Point)

A. Velocity

B. Speed

C. Time

Answers

Speed is the answer

Answer:

The answer is A

Explanation:

Velocity is the rate of change of its position with respect to a frame of reference, and is a function of time.

Why does autumn start in different months of the year in North America and South America?
A) The earth is tilted on its axis creating different seasons in the North & Southern Hemispheres at different points in its revolution around the sun
B) The earth is at a different distance from the sun due to its revolution
C) The sun is stronger during autumn due to the earth's elliptical orbit.
D) The earth’s tilt causes the Northern Hemisphere to receive more sun year-round Eliminate

Answers

Answer:

D

Explanation:

Autumn start in different months of the year in North America and South America due to the tilt in earth's axis creating different distance from the sun for different regions.

What are seasons ?

A season is a time of year that can be identified by unique climatic features. Spring, summer, fall, and winter all occur in regular succession. Each has distinctive seasonal variations in light, temperature, and weather.

Each seasons starts at different month in two hemispheres of  earth. This s due to the fact that, earth's axis is not perfectly circular and it is slightly tilted towards sun.

When the Northern Hemisphere is tilted toward the sun in June, more of the day is spent being illuminated by the sun's rays than it is in winter. As a result, there are longer daylight hours.

There are fewer daylight hours in December because the Northern Hemisphere is tilted away from the sun. Similarly the autumn season also differ from that of the southern hemisphere.

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have u ever wanted to just sleep all day and night

Answers

Answer:

yes ofc

Explanation:

yeah i do obviously :))

Select the statement below that best describes how environmental conditions affect an individual’s likelihood of survival and reproduction.

Explain why you chose the answer you did to the question above.

Answers

Answer:

I need more information it depends on the conditions.

I chose this answer because different people have different illnesses and that can effect how their bodies respond to the environmental conditions

Answer: The 2nd box from the top

Explanation: I know because I just did this

I really need help with this!! Will give brainliest if you help T^T

Answers

Answer:

What inferences can you make about the melting points of the different substances and the motion of their particles, based on the data? (ignore that needed it here so i could see it better.)

Explanation:

Butter has a lower melting point than the cheese and the wax. The motion of the cheese were a little separated while the butter articles have more space in between. The wax had the closest particles.

I dont know if that makes sense? 

URGENTTT PLEASE HELP

Answers

This doesn’t make any sense

Use the diagram below to answer the questions that follow for 1 point each. Predict the change seen in the balloon in the freezer Explain your prediction Use the equation to provide additional support for your prediction


NO LINK ANSWERS

Answers

Answer:

The particle model of matter is one of the most useful scientific models because it describes matter in all three states. Understanding how the particles of matter behave is vital if we hope to understand science!

The model also helps us to understand what happens to the particles when matter changes from one state to another.

The following diagram shows different changes of state, as well as which processes are the reverse of each other. Melting and freezing are the reverse processes of each other and so are evaporation (boiling) and condensation.

Explanation:

NEED IN 5 MINUTES
Why do you think it’s necessary for meteorologists (weather scientists) to study multiple types of data when
predicting upcoming weather? Which types of data are important

Answers

sorry i didnt get this intime.....i hope you did well in whatever you did

Explanation:

5 min, Im late. :D good luck tho

While at the beach, Lee collected this pile of rocks. How could Lee find out whether the rocks contain the same minerals?

A) Compare their sizes.
B) Compare their shapes.
C) Compare their masses.
D) Compare their colors.

Answers

The answer:
D) Compare their colors
compare their colors

Any absurd answers will be reported, no links either. Ill give branliest to someone with the best answer and someone who answered them all correctly

Answers

Answer:

1. D

2.C

3. A

4. B

5. D

I tried my best hopefuly you get good grade :)

A baseball is thrown at 90 mph from east to west over a distance of 60 ft. What is
true of the ball's motion?
Its speed is 90 mph to the west.
Its acceleration is 30 mph.
Its velocity is 90 mph to the west.
Its acceleration is 150 mph.

Answers

Answer:

Its acceleration is 30 mph.

Explanation:

The true of the ball's motion will be that the velocity is 90 mph to the west. Velocity is the vector quantity. Because it shows the direction.

What is acceleration?

Acceleration is defined as the rate of change of the velocity of the body. Its unit is m/sec². It is a vector quantity. It requires both magnitudes and direction to define.

The given data in the problem is

The velocity of  baseball is,V=  90 mph

The distance travelled in mile is; d=0.0113636 mile

The time period is obtained as;

[tex]\rm t = \frac{d}{v} \\\\ \rm t = \frac{0.0113636}{90} \\\\ t=1.2 \times 10^{-4} \ hr[/tex]

The acceleration is obtained is 0.00108 mile/hr².

Hence, the true of the ball's motion will be that the velocity is 90 mph to the west.

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A parallel circuit has a 125 Volt battery connected with 3 resistors. R1= 20 Ω, R2= 100 Ω, and R3= 50 Ω. Find the total current of this parallel circuit.

Hint: Find Total Resistance of a parallel circuit first then use Ohms Law I = V/R

10 A


1.5 A


8 A


16 A

Answers

Answer:

10A

Explanation:

to calculate r

1/R=1/20+1/100+1/50=2/25

r=25/2=12.5

I=125/12.5=10A

Four radioactive 10-gram (g) samples with their remaining isotope mass are listed in the table that spans 50 years.
Which isotope would be expected to have the longest half-life?
PLEASE GIVE ME THE CORRECT ANSWER (THANK YOU IN ADVANCE.) no links please, Just the answer.
A.
Silver-108

B.
Mercury-194

C.
Californium-249

D.
Americium-241


10 years 9.84 g 9.80 g 9.84 g 9.85 g
20 years 9.68 g 9.61 g 9.67 g 9.69 g
30 years 9.53 g 9.42 g 9.51 g 9.54 g
40 years 9.38 g 9.24 g 9.36 g 9.39 g
50 years 9.23 g 9.06 g 9.20 g 9.25 g

Answers

I’m pretty sure the answer is D

Americium-241  isotope would be expected to have the longest half-life. Hence, option (D) is correct.

What is half-life?

In radioactivity, the half-life is the time required for one-half of a radioactive sample's atomic nuclei to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time required for the number of disintegrations per second of a radioactive material to decrease by one-half.

According to given data:

Rate of decay is the highest for Mercury-194, hence, its half-life is least. Then rate of decay is lowest for  Americium-241, hence, its half-life is the longest. Hence, option (D) is correct.

The order of half-life according to the data is:

Americium-241 > Silver-108 > Californium-249 >  Mercury-194.

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name all of the processes of the rock cycle... and number them by the picture.... no links

Answers

Answer:

1. magma

2. igneous rock

3. sediments

4. sedimentary rock

5. metamorphic rock

6. melting

7. cooling, heating

8. weathering and erosion

9. compaction and cementation

10. heat and pressure

11. heat and pressure

12. weathering and erosion

Explanation:

just trust me .!!

A balloon holds 50.0 mL of nitrogen at 25° C and a pressure of 736 mm Hg.
According to Boyle's Law, answer the following questions for 2 points each:

What will be the effect on the pressure inside the balloon if the volume is decreased to 25 mL?
Explain how this would demonstrate Boyle's Law.
Explain Boyle's Law in terms of the kinetic energy of molecules.

This is a written question
No link answers please!!!

Answers

Answer:

A container holds 50.0 mL of nitrogen at 25° C and a pressure of 736 mm Hg. What will be its volume if the temperature increases by 35° C?

✓ For this problem we would use the equation for Charles' Law which compares the direct relationship between Volume and Temperature when Pressure is …

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