1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Advocard [28]
3 years ago
5

The closure temperature represents the point when ________. A. a magma cools to the point where minerals begin to crystallize B.

radioactive isotopes begin to decay C. isotopes are no longer free to move out of a crystal lattice D. the last remaining magma crystallizes
Physics
1 answer:
melomori [17]3 years ago
5 0

The closure temperature represents the point when isotopes are no longer free to move out of a crystal lattice.

Answer: Option C

<u>Explanation:</u>

The closure temperature can also be termed as blocking temperature. It is mostly used in radiometric dating. As the temperature decreases, below a certain point the isotopes may get freeze in their lattice positions. And there may be slowing of diffusion.

At the closure temperature, that rate of diffusion will be zero as the isotopes will be no longer free to move out of crystal lattice. So, this is termed as closure or blocking temperature. As the isotopes loose their ability to move, their concentration will remain fixed in their position leading to measurement of radiation dating.

You might be interested in
The period of a simple pendulum in a grandfather clock on another planet is 1.80 s. What is the acceleration due to gravity (in
weeeeeb [17]

Answer:

12.17 m/s²

Explanation:

The formula of period of a simple pendulum is given as,

T = 2π√(L/g)........................ Equation 1

Where T = period of the simple pendulum, L = length of the simple pendulum, g = acceleration due to gravity of the planet. π = pie

making g the subject of the equation,

g = 4π²L/T²................... Equation 2

Given: T = 1.8 s, l = 1.00 m

Constant: π = 3.14

Substitute into equation 2

g = (4×3.14²×1)/1.8²

g = 12.17 m/s²

Hence the acceleration due to gravity of the planet = 12.17 m/s²

4 0
2 years ago
Which statement best reflects the approach of Gestalt psychology?
GarryVolchara [31]
Gestalt psychology is a a theory of mind of the Berlin School of experimental psychology. It tries to understand the laws of our ability to acquire and maintain meaningful perceptions in an apparently chaotic world. It proposes that the whole of an object or scene is more important than its individual parts.
3 0
2 years ago
Read 2 more answers
A book weighing 12 n is placed on a table. how much support force does a table exert on the book?
Alenkasestr [34]
It should be 12 N. the force of the book on the table should be the same as the force of the table on the book.
7 0
3 years ago
Sarah is sitting at the top of the slide in the school's playground. Which of the following changes will increase Sarah's kineti
Ray Of Light [21]
B; kinetic energy is anything in motion
7 0
3 years ago
Answer the question based on this waveform.
Nuetrik [128]

Answer:

Cannot be determined from the given information

Explanation:

Given the following data;

Velocity = 24 m/s

Period = 3 seconds

To find the amplitude of the wave;

Mathematically, the amplitude of a wave is given by the formula;

x = Asin(ωt + ϕ)

Where;

x is displacement of the wave measured in meters.

A is the amplitude.

ω is the angular frequency measured in rad/s.

t is the time period measured in seconds.

ϕ is the phase angle.

Hence, the information provided in this exercise isn't sufficient to find the amplitude of the waveform.

However, the given parameters can be used to calculate the frequency and wavelength of the wave.

6 0
3 years ago
Other questions:
  • An inductor is connected to a 18 kHz oscillator. The peak current is 70 mA when the rms voltage is 5.4 V What is the value of th
    6·1 answer
  • Which listed property of alternating current is the MOST LIKELY reason it was chosen over direct current to provide electricity
    8·2 answers
  • Help!! I’ll give brainliest!! Which person will hear the highest pitch?
    11·2 answers
  • Before hanging new William Morris wallpaper in her bedroom, Brenda sanded the walls lightly to smooth out some irregularities on
    14·1 answer
  • You're driving down the highway late one night at 20 m/s when a deer steps onto the road 38 m in front of you.Your reaction time
    6·1 answer
  • What change of state occurs during vaporization?
    9·1 answer
  • Which has more heat, a home oven at 500 degrees Celsius, or a one ton commercial oven at 500 degrees celsius?
    8·1 answer
  • 4.) A rocket is fired at a 60° angle, which statement below is true about the launch velocity?
    11·1 answer
  • What is the kinetic energy of a 2.0 kg object moving at 5 m/s?
    12·2 answers
  • a cylindrical glass rod is heated with a torch until it conducts enough current to cause a light bulb to glow. the rod has a len
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!