Homepage
Login
Profile
BookClubs
dmBox
Read Ebook: First Lessons in Natural Philosophy for Beginners by Martindale Joseph C Joseph Comly
Font size:
Background color:
Text color:
Add to tbrJar First Page Next Page Prev Page
Ebook has 2949 lines and 42988 words, and 59 pages
What is the time which it takes to turn over once called?
It is called a day.
How many days in a year?
There are three hundred and sixty-five days in a year.
What two motions, then, has the earth?
It turns over and over, and at the same time it moves around the sun.
What change is produced on the earth by its moving around the sun?
The change of Seasons.
Will you name the seasons?
Winter, Spring, Summer, and Autumn.
Do they follow each other in regular order?
They do; Spring follows Winter, Summer follows Spring, Autumn follows Summer, Winter follows Autumn, and Spring follows Winter again.
How often have we these seasons?
As often as the earth moves around the sun, which is once a year.
What change is produced on the earth by its turning over?
The change of day and night.
Where is it day?
It is day on that part of the earth which is turned towards the sun.
Where is it night?
It is night on that part of the earth which is turned away from the sun.
How often do we have the change from day to night?
As often as the earth turns over, which is once in twenty-four hours.
What is a day?
A day is the time from sunrise till sunrise again, from sunset till sunset again, from noon till noon again, or from midnight till midnight again.
What does a day include?
It includes the night-time as well as the day-time, of the twenty-four hours.
When it is day-time on one part of the earth, what is it on the opposite part?
It is night-time on the opposite part.
When it is morning to us, what is it to people living on the opposite side of the earth?
When it is morning to us, it is evening to them; when it is day-time to us, it is night-time to them; and when it is noon to us, it is midnight to them.
On how much of the earth is it always day?
It is day on one-half of the earth, while on the other half it is night.
The sun seems to move around the earth; does it really do so?
No; it does not move around the earth.
Yes; it turns over once every day.
Why does it not seem to us to be moving?
Because we move along with it. If we are on a railroad car, the trees and houses along the road appear to move, and the car to stand still; but the car really moves, while the trees and houses stand still.
In what direction does the earth turn on its axis?
The earth turns from west to east.
Where do the sun, moon, and stars rise?
The sun, moon, and stars rise in the east.
The teacher may, by means of a ball or small globe, readily make these things so plain that they can be understood even by small children.
When is it sunrise to us?
When the part of the earth on which we are, first comes into the sun's rays.
When is it sunset to us?
When the part of the earth on which we are, moves out of the sun's rays.
The Moon.
We have been told that the earth moves around the sun; does any planet move around the earth?
Yes; one planet moves around the earth.
What is that planet called?
It is called the Moon.
Add to tbrJar First Page Next Page Prev Page