A:put an atom on a poster in the exhibit C:Display a large three dimensional -
model of an atom.
B:use a life size drawing of an atom d:set up a microscope so that visitors-
can view atoms
The star'scolor is an important property of stars because it provides some information about the temperature of a star. The correct option is C.
A star'shue depends on its temperature; cooler stars seem red, while hotter stars appear blue or white.
This is due to the fact that although stars emitlight over the full spectrum, the predominant hue in the light that we perceive is the color that corresponds to the star's temperature.
The other stated characteristics, such as a star's name, distance from the star, and shape, have no direct bearing on a star's temperature.
However, these characteristics can also provide crucialdetails about the star, such as its size, brightness, and location in the sky.
Thus, the correct option is C.
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Answer:
The stars color
Explanation:
Scientists know how a Star is by their color like blue is hotter than red
The atomic number is the number of protons of the atom.
So, just count the number of red spheres (protons) and that is the atomic number of the atom.
The protons are in the nucleus of the atom. Every single element is formed by a representative number of protons (atomic number).
For example, every hydrogen atom has one proton and its atomic number is one.
Every helium atom has two protons and its atomic number is two.
And so on. This permits you to order the elements in the periodic table in increasing atomic number.
There are no two elements with the same number of protons (atomic number) and all the atoms of a same element have the same number of protons.
b. change in mass
c. endothermic change
d. exothermic change
Jose wandered for 2 hour with speed at 2 kilometers per hour.
The speed of an item, which is a scalar quantity in everyday usage and kinematics, is the size of the change in that object's position over time or the size of the change in that object's position per unit of time.
The instantaneous speed is the upper limit of the average speed as the duration of the time interval approaches zero. The average speed of an item in a period of time is equal to the distance travelled by the object divided by the duration of the period.
Given parameters:
Distancetravelled by Jose = 4 kilometer.
Speed of Jose = 2 kilometers per hour.
Now from definition of speed:
Total time taken = Distance travelled by Jose ÷ Speed of Jose
= 4 kilometer ÷ 2 kilometers per hour.
= 2 hour.
Hence, Jose wandered for 2 hour.
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