Tag Archives: Sun

How did the sunflower get its name?

The sunflower gets its name from its habit of facing the sun.  Sunflowers are tall plants.  They have yellow flowers with large brown centers which are full of seeds that are good to eat. The sunflower gets its name from its habit of facing the sun as it moves from east to west during the …

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What is the biggest desert?

The Sahara desert of North Africa is the Largest desert in the world.  It is nearly as big as the whole united states. Almost as large as the whole United States, the Sahara stretches across the northern part of Africa from the Atlantic Ocean to the Red Sea. The Sahara desert is a vast, sunbaked …

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What makes the wind blow?

Wind is caused chiefly by the uneven heating of the earth by the sun. All winds, from gentle breezes that rustle leaves to raging hurricanes, are caused chiefly by the uneven heating of the earth by the sun. When the air near the ground gets hot, it expands or swells.  This makes it lighter, and …

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What are infrared rays?

Infrared rays are waves of invisible radiant energy, like the visible waves of sunlight that travel, or radiate from the sun. Infrared rays the lie outside the visible spectrum at its red end.  These rays are “redder” than the reddest light our eyes can see, so they are called infrared, meaning “below the red.” Infrared …

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Why does the moon have phases?

As we watch the moon night after night, it seems to change its shape.  These different appearances are called phases. The moon’s rotation around the earth causes the phases. The moon gives off no light of its own.  It reflects the light from the sun.  The sun can light up only one half of the …

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What is a milky way?

If you have ever looked at the sky on a clear night, then you have probably seen a milky-looking path of light across the sky.  This is the Milky Way. It is actually the light from many billions of stars, most of which are too far away to be seen as separate stars. The huge …

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What is the earth’s atmosphere?

The atmosphere is the great  ocean of air enveloping the earth.  it extends up for hundreds of miles. You and I live at the bottom of a great ocean of air that surrounds the earth and that extends upward for hundreds of miles.  We call it the atmosphere. We could not live without it and …

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What makes the color in a rainbow?

The colors in a rainbow are made by sunlight shining through raindrops in the air, which separate the light into the colors of the spectrum. A rainbow occurs at the end of a storm, when the sun begins to shine while the air is still filled with raindrops. When the sunlight passes through the millions …

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Why do we have leap years?

LEAP YEAR IS THE YEAR IN EVERY FOUR THAT HAS 366 DAYS INSTEAD OF 365.  THE EXTRA DAY IS ADDED TO FEBRUAY TO MAKE THE CALENDAR YEAR NEARLY THE SAME AS THE SOLAR YEAR. Leap year has 365 days, one more day than an ordinary year.  The calendar we use is based on the amount …

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Why do we have time zones?

Time zones establish a regular sequence of time changes around the world.  All the places in each zone have the same time.  It is called standard time.  Travelers often pass through time zones.  When it is noon in Chicago, for example, nit is 6 o’clock in the evening in London. We can understand why time …

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