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Earth As A Body In Space
Test Description: Earth as a body in space unit test
Instructions: Answer all questions to get your test result.
1) Why does Earth experience precession?
A
because of the movement of the circumpolar stars and polaris
B
because the Earth revolves around the Sun every 365 days
C
because the Earth is the third planet from the Sun
D
because the plane of the moon's orbit is tilted from the Earths elliptical plane
2) If it is summer in the northern hemisphere, which statement is true
A
Earth has reached its closest point to the sun due to its revoltion
B
It is winter in the southern hemisphere due to the tilt of Earth's axis
C
It is summer in the southern hemisphere due to the tilt of Earth's axis
D
Earth has changed the tilt of its axis by 20 degrees due to its revolution
3) How does a straight alignment between Earth, the Sun, and the moon impact the tides on Earth?
A
It produces the least change in high and low tides
B
It produces semidiurnal tides
C
It produces diurnal tides
D
It produces the greatest change in high tides and low tides
4) Which statement decribes the motion of Earth around the Sun?
A
The speed of Earth is constant regardless of its distance from the Sun
B
Speed increases the closer Earth is to the sun and decreases the farther it is from the sun
C
Speed decreases the closer Earth is to the sun and increases the further it is to the sun
D
The speed of Earth is constant because the distance remains the same between the Sun and the Earth
5) Why do green plants require solar energy?
A
to absorb nitrogen into their roots
B
to produce their own food
C
to release carbon dioxide into the atmosphere
D
to decompose the dead or decaying remains of animals.
6) Which law states that planets move faster when they are closer to the Sun?
A
Newton's law of universal gravitation
B
Kepler's first law
C
Kepler's second law
D
Kepler's third law
7) How does the tilt of the Earth's axis affect the seasons?
A
by influencing the rate of chemical reactions occurring in the atmosphere
B
by deflecting the harmful rays of radiation emitted by the Sun
C
by changing the speed of the rotation of the Earth
D
by changing the amount of direct solar energy reaching the surface of Earth
8) Why is the Sun's composition similar to that of the gas giant planets?
A
They both gained heavy elements
B
They both lost heavy elements
C
They all formed from the same interstellar cloud
D
They all formed at the same time
9) In December, the South Pole is tilted closer to the Sun at any other time of the year and the North Pole is tilted the furthest from the Sun. What is the Northern hemisphere experiencing at that time?
A
the vernal equinox
B
The winter solstice
C
the summer solstice
D
the autumnal equinox
10) Which planet is moving fastest in its orbit?
A
Mercury
B
The Sun
C
Venus
D
The Earth
*select an answer for all questions
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