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A ringing alarm clock is put under a glass jar. The air is slowly removed from the space around it. What will happen as the air
17 answers
asked by
Anonymous ;)
4,044 views
The surface of which material is least likely to reflect light?(1 point)
Responses pillowcase sheet of metal mirror water
6 answers
asked by
Anonymous ;)
547 views
A student is investigating what happens when a neutral metal sphere sitting on an insulated stand is touched by a negatively
10 answers
asked by
Anonymous ;)
760 views
Which type of surface would best reflect light?(1 point)
Responses smooth and dull rough and dull smooth and shiny rough and
4 answers
asked by
Anonymous ;)
1,443 views
1871133
Her teacher asks her to change the wave to show a greater energy transfer. What can the student do? a She can increase
3 answers
asked by
Anonymous ;)
252 views
When referring to functions, the DOMAIN is made up of ____.
When referring to functions, the RANGE is made up of or _____. Linear
3 answers
asked by
Anonymous ;)
284 views
My hypothesis for "Can Water Be Split Into Hydrogen and Oxygen?"
3 answers
asked by
Alisha
988 views
Which statement best describes the reflection of a wave?(1 point)
Responses A wave fails to reach the surface of a material. A
4 answers
asked by
Anonymous ;)
1,386 views
Energy in Waves Quick Check
4 of 54 of 5 Items Question Use the image of the electromagnetic spectrum to answer the question. The
3 answers
asked by
Anonymous ;)
503 views
Some frequencies of ultraviolet light have enough energy to kill bacteria and viruses, but do not have enough energy to
1 answer
asked by
Anonymous ;)
134 views
Which of the following correctly expresses the relationship between frequency and wavelength. Use the diagram below to help you.
1 answer
asked by
Anonymous ;)
136 views
Lightning contains gamma rays. Based on the position of gamma rays in the electromagnetic spectrum, does lightning have more or
3 answers
asked by
Anonymous ;)
290 views
Airport security uses electromagnetic waves to see items inside of luggage without having to open the bags. Which type of
1 answer
asked by
Anonymous ;)
173 views
Which is an example of a student using critical thinking to study kinetic energy?(1 point)
Responses Abe evaluates his
3 answers
asked by
fffff
246 views
Question 4 (1 point)
d863150b-2875-4a52-ac1b-163a77627913 Which model below successfully illustrates a Boron atom? a
4 answers
asked by
Anonymous ;)
151 views
Question 5 (1 point)
The diagram shows a model of a nitrogen (N) atom that Darnell drew. Based on the information from the
2 answers
asked by
Anonymous ;)
244 views
Rachel is learning about electromagnetic radiation that comes from the Sun. What types of electromagnetic radiation does the Sun
15 answers
asked by
Anonymous ;)
194 views
A student is instructed to design a device that can allow one user to hear the voice of another user at a distance of 5
1 answer
asked by
Anonymous ;)
122 views
A student is told to propose a design for a device capable of producing an image like the one shown below of the interior of the
3 answers
asked by
Anonymous ;)
154 views
What results from a wire carrying a current?
a an electric field b beams of white light c the dispersion of photons d a magnetic
3 answers
asked by
Anonymous ;)
278 views
Which of the following is the process of charging a conductor by bringing it near another charged object and then grounding the
1 answer
asked by
Anonymous ;)
146 views
Brian made an electromagnet in his science class. He spread out several paper clips, all made of the same material and the same
4 answers
asked by
Anonymous ;)
355 views
A list of Environmental Problems
1 answer
asked by
Anonymous "T"
380 views
Explain how limbless salamanders evolved according to Darwin's theory of natural selection?
1 answer
asked by
Anonymous Chaney
480 views
Information that describes environmental benefits and challenges of urbanization. Include descriptions of two award winners, and
1 answer
asked by
Anonymous Chaney
424 views
Information that describes environmental benefits and challenges of urbanization. Include descriptions of two award winners, and
1 answer
asked by
Anonymous Chaney
442 views
What are the four factors that produce changes in population size?
3 answers
asked by
Anonymous Chaney
370 views
What are some Effects of Urbanization?
2 answers
asked by
RENE'
472 views
How do lipids move through the body so they can be digested and absorbed?
(2) How are lipids stored in the body?
3 answers
asked by
Dawn
410 views
What would happen if our pH levels increased?
5 answers
asked by
Lena
326 views
What are the 5 signs that show a chemical change has taken place?
I wrote: - theres a smell of ordur - change in color - fizzing
7 answers
asked by
Lena
549 views
I am having a hard time finding anything on this can someone please help me? How did the 1996 award winners of the dubai award
2 answers
asked by
Anonymous
535 views
Can anyone help me with this please? What is a sustainment plan for Endangered and Extinct Species?
1 answer
asked by
Anonymous
397 views
Design an experiment that could be carried out to compare the rates of corrosion of iron.
What are the independent and dependent
3 answers
asked by
Josh_R
664 views
What an individual can do to help preserve the diversity of the Okapi Wildlife Reserve?
Please help me answer this question.
4 answers
asked by
Julissa
434 views
what are good materials to make a wind powered car out of?
i mean a fake car like milk jugs stuff like that
3 answers
asked by
Greg
457 views
What's the point of having a ecosystem diagram for the global warming?????? And I do then whats my hypothesis going to be???
2 answers
asked by
Alisha
657 views
I want to do a science project like i am going to show two different ecosystem and predict and show which one is more polluted
1 answer
asked by
Alisha
374 views
Whats My hypothesis for "Can Water Be Split Into Hydrogen and Oxygen?"
6 answers
asked by
Alisha
426 views
I want a catchy prahse for my topic experiment"Can water be splitted into hydrogen and oxygen?"
1 answer
asked by
Alisha
308 views
Why is it important to be accurate when measuring or recording data????
1 answer
asked by
Sumaiya
428 views
I am writing a peom on the element flourine and it should explain and the structure of the atoms that make up that element,
2 answers
asked by
Sumaiya
526 views
Does my poem below have these things "explain why it is where it is on the periodic table, what element(s) it might combine with
1 answer
asked by
Anonymous
502 views
A 5kg voulume of water falls from a shelf 2 meters above the floor, If all the energy is converted to heat, what is the change
1 answer
asked by
Trice
288 views
when a large amount of FeCl3 is dissolved in water, a clear solution is formed at the beginning but eventually a precipitate is
1 answer
asked by
T
386 views
Which has minimam pkb
1 answer
asked by
Arun
342 views
What is not an enviremntal effect of desroying wetlands
1 answer
asked by
Justice
344 views
The halflife of Phosphorus is 14.3 days, if i start with 100g how long will it take so that only 25g will be left?
One month is
3 answers
asked by
Kathy
353 views
Are there magnets with a single magnetic pole? Is it possible for the pole strength to be different for the north and south
1 answer
asked by
Lyn
425 views
Which is the correct order of atmospheric layers from the bottom to the top
Here's the answers for the hole thing. 1)
3 answers
asked by
Don't need to know my name
355 views
Find the force acting on a body of man 6 kg acceleration with an acceleration of 4ms-2
2 answers
asked by
Jaya
97 views
Why does salt water appear to be a single substance even though it contains more than one substance?
a Salt water is a solution
4 answers
asked by
Anonymous ;)
206 views
What correction should be made to Natasha's table?
a Mixtures contain at least three or more substances. b Pure substances can be
3 answers
asked by
Anonymous ;)
163 views
When a light wave enters a medium of greater density, which of the characteristics below will decrease in the wave.
a Speed b
3 answers
asked by
Anonymous ;)
101 views
Which wave would have the highest energy?
A B C a None b B c A d C
3 answers
asked by
Anonymous ;)
66 views
Ms. Knuth places a stick in a pond. When she looked down at the stick, it appeared to be broken or bent at the point where the
3 answers
asked by
Anonymous ;)
209 views
According to the chart, which medium cannot transmit sound?
1664594 a Stone b Vacuum/Space c Water d Air
1 answer
asked by
Anonymous ;)
114 views
The wavelength of the wave in the above diagram is:
a 1.0 m b Cannot be determined from graph. c 0.4 m d 0.2 m
1 answer
asked by
Anonymous ;)
129 views
A wave is represented in the diagram below.
1340619 What is the amplitude of the wave? a 1 m b 6 m c 3 m d 2 m
7 answers
asked by
Anonymous ;)
92 views
submissive is most similar in meaning to ___
1 answer
asked by
Anonymous ;)
51 views
Use the information about four different waves to answer the question.
Wave # Frequency Wavelength Wave 1 6.66 × 1014 Hz 450 nm
3 answers
asked by
Anonymous ;)
797 views
Waves have energy that causes particles in matter to vibrate. So, it stands to reason that(1 point)
Responses the higher the
1 answer
asked by
Anonymous ;)
175 views
X-ray technicians wear protective gear to keep them safe from the X-rays. Why are X-rays dangerous?(1 point)
Responses They have
2 answers
asked by
Anonymous ;)
140 views
A skateboarder is shown below.
At which point is the skateboarder's potential energy the greatest? A. W B. X C. Y D. Z
3 answers
asked by
Anonymous ;)
146 views
The table shows the densities of four substances.
Substance Density (grams/centimeter3) air 0.00123 water 1.00 steel 7.87 copper
2 answers
asked by
Anonymous ;)
262 views
Malik built a simple electromagnet with copper wire, an iron bolt, and a 1.5-volt battery. The electromagnet was able to lift a
1 answer
asked by
Anonymous ;)
244 views
How does painting the classroom affect teachers, caretakers, and students?
1 answer
asked anonymously
57 views
Which of the following statements best describes the atoms and molecules that make up a glass filled with water?
a The atoms and
1 answer
asked by
Anonymous ;)
99 views
The diagram below shows a substance in various states of matter.
Image Which figure from the diagram shows the substance as a
1 answer
asked by
Anonymous ;)
96 views
Which statement best describes what will occur if enough thermal energy is removed from the system to cause a change in state?
a
1 answer
asked by
Anonymous ;)
86 views
How is the ice different from the water vapor that forms after the water begins to boil?
a The ice particles have less energy. b
1 answer
asked by
Anonymous ;)
91 views
Which property causes a pencil to appear bent or broken when it is placed in a glass partially filled with water?(1 point)
Respon
3 answers
asked by
Anonymous ;)
157 views
A television remote control is used to direct pulses of electromagnetic radiation to a receiver on a television. What does this
1 answer
asked by
Anonymous ;)
87 views
A television remote control is used to direct pulses of electromagnetic radiation to a receiver on a television. What does this
1 answer
asked by
Anonymous ;)
160 views
Some frequencies of ultraviolet light have enough energy to kill bacteria and viruses, but do not have enough energy to
1 answer
asked by
Anonymous ;)
270 views
The diagram below shows the frequencies of various types of electromagnetic radiation.
image 3729e4d9e1084b14b3471d39972b1619
1 answer
asked by
Anonymous ;)
212 views
A student must create a mode of a lens. The lens must be able to focus light into a small space. Which best describes the type
2 answers
asked by
Anonymous ;)
228 views
Question 1 (2 points)
Solve the equation filling in the steps (do not use any spaces): 2(x - 3) + 21 = -3 Step 1: Distribute to
1 answer
asked by
Anonymous ;)
130 views
Which of the following is a physical property of sodium?
a molecular structure b combustibility c melting point d reactivity
1 answer
asked by
Anonymous ;)
143 views
The data shows the speed of sound through air and sea water at 21°C.
How does the speed of sound in sea water compare to the
1 answer
asked by
Anonymous ;)
264 views
Question 2 (1 point)
Through which of the following would sound waves travel the fastest? a a vacuum b a railroad track c Earth's
1 answer
asked by
Anonymous ;)
167 views
On a guitar, the longest string vibrates slowly, and the shortest string vibrates very quickly. What conclusion can be made
1 answer
asked by
Anonymous ;)
118 views
The pictures show four wavelengths of sound.
Which line shows the lowest frequency? a X b Y c Z d W
1 answer
asked by
Anonymous ;)
65 views
Question 5 (1 point)
What is the difference between a reflected and a diffracted sound wave? a A diffracted sound wave bounces
2 answers
asked by
Anonymous ;)
170 views
Question 1 (1 point)
How many atoms of chlorine (Cl) are in a molecule of phosphorus trichloride, PCl3? a 3 b 0 c 2 d 1
1 answer
asked by
Anonymous ;)
266 views
This is the periodic table of the elements.
The diagram shows an unknown atom. Based on the information from the periodic table,
1 answer
asked by
Anonymous ;)
264 views
Question 3 (1 point)
5eab69d2-6572-428a-9843-c02560c8d5b1 Which element does NOT have similar chemical properties to neon (Ne)? a
1 answer
asked by
Anonymous ;)
95 views
A student has to create a model of a convex lens. Which property of a convex lens should the student include in the model?
a The
1 answer
asked by
Anonymous ;)
150 views
What causes light to slow down?
a moving into a vacuum b moving into a denser medium c moving into a lighter medium d moving into
1 answer
asked by
Anonymous ;)
74 views
The diagram below represents a transverse wave.
The wavelength of this wave is equal to the distance between which two points?
1 answer
asked by
Anonymous ;)
70 views
What happens when light waves travel from air through a denser medium?
a They will speed up and bend. b They will slow down and
3 answers
asked by
Anonymous ;)
102 views
Describe how a light wave changes as it travels from the air into water.
a It speeds up because water is less dense than air. b
1 answer
asked by
Anonymous ;)
88 views
A television remote control is used to direct pulses of electromagnetic radiation to a receiver on a television. What does this
1 answer
asked by
Anonymous ;)
103 views
Which type of electromagnetic waves would be the best to use in an object designed to cook food?
a gamma waves b microwaves c
1 answer
asked by
Anonymous ;)
101 views
A student is building a model of a lens that will spread light over the biggest space. Which best describes the type of model
1 answer
asked by
Anonymous ;)
108 views
When the pitch of a wave increases, the wavelength of the wave
a doubles. b increases. c stays the same. d decreases.
1 answer
asked by
Anonymous ;)
63 views
Different colors absorb and reflect different amounts of sunlight. Which color would make the most sense to use to paint a house
1 answer
asked by
Anonymous ;)
81 views
A student is investigating two transverse waves. One of the waves is electromagnetic and the other wave is mechanical. Which
1 answer
asked by
Anonymous ;)
174 views
Why would a baseball player see a baseball flying through the air before he hears the crack of the ball on the bat?
a because
1 answer
asked by
Anonymous ;)
105 views
Which of the following statements best describes the relationship between wavelength and frequency?
a The longer the wavelength,
1 answer
asked by
Anonymous ;)
107 views
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