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20th of March 21st of June Andrews angle apparent ask the pupils axis body Bring the calendar calendar index called carried cause change of season circle cross dark Day and Night December diameter difference direction distance distribution earth earth's surface east eclipse equal equator extend fact fall feet follows give given greater heavens hemisphere Hence illuminated Illustrate inch inclination latitude length less light and heat longitude lunar mark mean meridian miles minutes moon ball moon's Move movement nearly node north pole occur opposite orbit parallel pass path planets pointer pole position pupils to observe reaches represent revolve rise Rotate the globe seen September shadow shown side solar sphere star sun's sunlight sunrise surface Tellurian tide tion travels Tropic turn twilight twilight belt umbra vertical Zodiac Zones
Page 9 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Page 9 - The Diameter of a circle is a line passing through its center, and terminating at both ends in the circumference, as AC B.
Page 8 - Lines may be either straight, broken or curved. A straight line is one which has the same direction throughout its length. A straight line is also called a right line. A straight line is usually called a line simply, and when the word line occurs it is to be understood as meaning straight line unless otherwise specified. A straight line is the shortest distance between two points.
Page 11 - ... example, how many degrees north of the equator is New York City? Chicago? How many miles would that be? Instead, however, of saying that a place is a certain number of degrees north or south of the equator, we say that it is in so many degrees north or south latitude. Latitude means simply the distance north or south of the equator. Places north of the equator are in north latitude, and those south of it, in south latitude. The circles running east and west, which are drawn to show the latitude...
Page 13 - The DECLINATION of a heavenly body is its distance north or south of the celestial equator, measured on a meridian.
Page 5 - ... its influence from the moon to the earth, from the earth to the moon, and from the sun to the remotest planets, preserving surrounding worlds in their proper courses, and connecting the solar system with other worlds and systems in the remote spaces of the universe. When a stick of sealing wax is rubbed with a piece of flannel, it attracts feathers or small bits of paper; when a...
Page 8 - ... angles is called a right angle, and the lines are said to be perpendicular to each other. Thus...
Page 62 - If the plane of the moon's orbit coincided exactly with the plane of the ecliptic, she would pass through the earth's shadow at every revolution, and a lunar eclipse would take place at every full 'moon.