Earth in Space
The Powerful Sun
Seasons 1
Solar Angle
Seasons 2
100
This is what we call the sun with all the planets together as a system
the solar system
100
Once in a while, when the conditions are right, the sunlight is completely blocked during the day. This is called a solar eclipse and is caused by ... ?
the moon.
100
In the Northern Hemisphere, around New England, how many seasons do we have?
4.
100
When the Northern Hemisphere is pointed towards the sun, the amount of solar energy is "____" compared to when it is pointed away from the sun.
"more"
100
Mars has a tilt like Earth. What must also be similar to Earth?
Mar's has seasons.
200
The Earth is not the closest planet orbitting the sun. How many planets are between the Earth and the sun?
2 other planets
200
On Earth, the sun's energy keeps the planet warm. On other planets, the sun's energy is too strong for humans. Name one of these planets.
mercury, venus, or mars.
200
The longest day of the year is in June. We call this day the summer "________".
"solstice"
200
When the sun's energy is most intense, the solar angle is "____" degrees.
90 degrees.
200
In the northern parts of Alaska, during summer, what is amazing about the length of the day?
The sun never fully sets so it is light out for more than 24 hours straight!
300
The Earth, like other planets moves around a center. The movement of a planet around the sun is called ...?
"revolution"
300
The sun is many millions of miles away. Despite this great distance, we still feel the warmth of the sun's energy. How far is the sun from the Earth?
90-93 million miles
300
Twice a year, the number of hours of daylight is the same as the number of hours of night. These days are called "_______".
equinoxes
300
What does light do when it strikes a curved surface?
It spreads out (over a greater area).
300
A friend says, "When the winter becomes spring, and spring becomes summer, the number of hours in one day increases." What is wrong with this and what really changes?
The length of one day is always 24 hours and the number of hours of sunlight is what changes.
400
The Earth rotates around an imaginary line called an ...?
"axis"
400
The energy of the sun is powered by a special kind of reaction called ... ?
a nuclear (fusion) reaction
400
Like most of the planets, the Earth is tilted. The star that the Earth is always pointed to is called, "__________".
North Star
400
The science term for the behavior of light that hits a surface are an angle different than 90 degrees is known as, "______________"
beam spreading.
400
In the tropical regions of the world, the water is warmer because the solar angle is closer to 90 degrees. What is another reasons the water is warmer?
The number of hours of sunlight is more!
500
The same force was involved in the creation of the sun and Earth. This same force keeps the planets moving around the sun.
gravity
500
Sun energy is also called "_________" radiation
"solar"
500
In Australia, in the southern hemisphere, the longest day of the year is on "_____________"
December 20 or 21
500
The planet Mercury is not tilted. How will this be different from Earth?
Because there is no tilt, Mercury will have no seasons. The hot places will be hot year round, warm will be warm, cool will be cool and cold will be cold.
500
Near the Arctic (North Pole), the winter is very long and dangerously cold. Even in the summer, when the sun is out for many hours it is still freezing cold. Why is it still cold during summer in the Arctic?
Because the location of the Arctic, the solar angle is small, even in the summer. The energy from the sun is spread across so much land it cannot warm up one place.
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