Why was mendeleev’s work so important? a. he scientists find the mass of each element.

answer:

777

explanation:

Explanation:

Periodic table has vertical columns and horizontals rows.

Periods:  The horizontal rows are named as periods in a periodic table.In a period elements with same numbers of principle quantum number ('n') or total number of shells (energy levels) are present. For example : Sodium comes in third period which means that sodium has three shells in total.

Groups: The vertical columns are named as group in a periodic table. In a group elements with same number electrons in their outermost shell are present. For example: In group one all the elements Li, Na, K etc have same number of valence electrons in their outermost shell.

So, in order to place a newly discovered element in a periodic table scientist must have the information regarding the number of valence electrons and total number of shells present in an atom of that element. One can easily look for valence number of electrons and total number of shells from the atomic number of that particular element.

By the knowledge of valence electrons and total number of shells the scientist will able to decide the group number and period number for newly discovered element.

Scientists determine it by calculating the distance of the earthquake's epicenter from the seismometer.

Seismologists use the difference in arrival time between P and S waves to calculate the distance between the earthquake source and the seismograph. Seismograph should be placed far from shaky places like traffic or lose surfaces. It must be placed on a hard rock where there is no disturbance of any kind.

They can find the starting point of earthquake by seismometer

The epicenter of earthquake can be found by calculating the distance of seismometer and the  time taken by it to reach the siensmometer. The meter is placed on a rock or somewhere where the surface is not shaky and a firm reading could be taken. They should be placed away from noise sources like traffic noise or any other noise. There are two types of waves that are taken into consideration. These waves are called P waves and S waves which are responsible for determining the location of the earthquake.

They use seismology

Explanation:

Seismology is the study of seismic shocks (earthquakes), in order to understand and determine the mechanisms involved in the plate tectonics of our planet, as well as their causes and distribution over the terrestrial globe, in an attempt to predict them in time and space at from the analysis of circumstances in which natural earthquakes occur. As a method of geophysical study, seismology also performs analyzes on the structure and layers of the Earth, from its surface to the nucleus.

Through seismology, seismic waves emitted by earthquakes can be detected, recorded and analyzed. From this analysis, information can be obtained about the precise location of the earthquake (epicenter), its depth, released energy, the mechanism that generates the shock, and the means that the waves traveled to reach the place where they were generated until the sensor that detected them.

through ecological science

Explanation:

Ecological scientists study organism-environment interactions across ... Plant life clothes much of Earth's land surface, providing structure to ecosystems (e.g., ... Figure 1: A flock of Ibis visits a flooded rice field in California.

Age structure would help scientists determine if the problem exists with young or old dolphins.

The age structure shows the distribution of the ages of the individuals in a population. This not only shows the type of change taking place in the population (increasing, decreasing or staying the same) but also is able to help us relate problems to ages. By determining the which age group is more stressed, the scientists will be able to narrow down the causes of the stress and create more accurate hypotheses.

Answerlife forms

I believe it's called seismograms that detect and upcoming earthquake, but you know they have p and s waves to detect movement.

Scientists use a method called triangulation to determine where the earthquake was. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake.

thats a little if u want the answer just look it up on google thats what i do haha : )

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'