PHYSICS MIDDLE SCHOOL

Answer these questions:How many tectonic plates can be identified on earth today?
Where does old sea floor sink back into the earth to be recycled
The worlds last supercontinent is known as __________.
And last,
How many years ago did the supercontinent Pangea begin breaking up?

Answer clearly,
I will know if you used the internet or not
Due today at 11:59pm
Will mark Brainliest!

Answers

Answer 1
Answer:

Answer:

1) Seven tectonic plates can be identified in the earth today.

2) The old sea floor sinks back into the earth to be recycled at the subduction zone.

3) The world's last supercontinent is known as Pangaea.

4) Pangaea began breaking up approximately 175 million years ago.

Explanation:

I hope this helped!!!!

Related Questions

Calculate the acceleration if force is equal to 50 and the mass is 45
What causes a nebula to collapse into a dense mass?
Explain how if two cases are side by side on a shelf one an have more potential energy
Use the term cell differentiation in a sentence
How mud is made summary

Similarities between land and sea breezes?

Answers

The wind will blow from higher pressure over the water to lower pressure over the land causing sea breeze.  The sea breeze strength will vary depending on the temperature difference between the land and the ocean

Which body system remove carbon dioxide and waste

Answers

The excretory system
Respiratory System bring oxygen into your body and  remove carbon dioxide waste. 

What are 3 uses of infrared radiation.

Answers

Remote controls
Security systems
Communication systems


uses of infrared radiationUsed in night vision devices to observe animals or people using the phenomenon called infrared illumination. The observant will not know that they are being observed.Used in astronomy to observe objects that are blurred and hidden by the interstellar dust. Infrared imaging process is used here.Used in astronomical telescopes that are equipped with infrared sensors and these telescopes are used to detect distant planets that are in the dusty regions of space, as they cannot be viewed using a normal telescope. They are also used to detect objects that have had a high red-shift (shifting of wavelength towards the red end of the spectrum).Used in infrared lamps (lamps that emit infrared radiation) and these lamps are used for drying paint, wallpapers and printing inks, to keep food warm, in heaters that are used during cold weather and in heat treatments in the field of medicineUsed in infrared lasers that produce infrared beams that can be used to read information on compact discs.Used in Infrared imaging devices that are used to obtain images of infrared radiation that are reflected or produced by objects, for example, heat insulation in buildings, sources of thermal pollution, mapping vegetation on the earth’s surface.Used in the chemical industry to determine molecular structure and composition of substances by studying their infrared emission or absorption.

13 points!When we see colors, it is because light is reflected off objects back to our eyes. Different colors are due to the different _____________ of the light.












A)
amplitudes



B)
wave speeds



C)
wavelengths



D)
polarization

Answers

Different colors after reflection appear due to the different wavelengths of light. Therefore, option C is correct.

What are frequency and wavelength?

The wavelength of the light can be defined as the distance between the two points in phase w.r.t. each other such as two crests or troughs on a wave. The frequency of the light is the number of oscillations of a wave in one second and has S.I. units of per second or hertz.

The expression between frequency (ν), wavelength (λ), and speed of light (c) is:

c = νλ

A wave moving at a fixed wave speed has a wavelength that is inversely proportional to the frequency therefore, the waves with higher frequencies have shorter wavelengths, while lower frequencies have higher wavelengths.

The speed depends upon the medium as it propagates. In particular, the speed of light in a particular medium is less than in a vacuum, therefore the same frequency will have a shorter wavelength.

When the light is reflected the colors are formed as due to different wavelengths.

Learn more about wavelength and frequency, here:

brainly.com/question/18651058

#SPJ6
The color is determined by the c) wavelength of light

What do the atoms of elements in the same group have in common? A. They have the same atomic numbers. B. They have the same average atomic masses. C. They have the same number of electron shells. D. They have the same number of electrons in their outermost shells.

Answers

Answer : The correct option is, (D) They have the same number of electrons in their outermost shells.

Explanation :

Periods : A row in the periodic table is known as periods.

The common features about the elements of a period are :

Each periods has elements with the same number of electron shells or energy levels or shell.

They transition from metal to noble gas that means they move from metal to non-metal and then non-metal to noble gas.

Groups : A column in the periodic table is known as groups.

The common features about the atoms of elements in a same group are :

Each groups has elements with the same number of valance electrons or have same of electrons in their outermost shells.

The elements in the same group have similar chemical properties.

The elements in the same group have similar physical properties.

Hence, the correct option is, (D) They have the same number of electrons in their outermost shells.
I think it's D . They have the same number of electrons in their outermost shells

X-raysUV light waves
Sound waves
Earthquake waves
All of these have which characteristic in common?

Answers

Answer:

They all have the characteristic "energy" in common

Explanation:

Energy is power derived from the utilization of physical or chemical resources, especially to provide light / heat or to work machines. X-rays, UV Light Waves, Sound Waves, and Earthquake Waves all have energy.
Other Questions
All of the following are true about hypotheses, except: A hypothesis is a question a scientist wants to research. A hypothesis is a statement that predicts what will be observed in an investigation. A hypothesis is based on background research performed by the scientist. A hypothesis is usually written in an if-then format that describes the proposed relationship between variables.
Can you explain that gravity pulls us to the Earth & can you calculate weight from masses on both on Earth and other planets?
What characteristics of carbon makes it essential to living organisms
Which is the best example of the concept of heredity? A. A black cat blends into its environment at night. B. A baby has his mother's hair and eye color. C. As a barnacle grows, it gets calcium for its shell from seawater. D. The sunflower will move so its flower head is always facing the sun.