Science Preparing for Quiz 1
__________ means supplied or brightened with light.
illuminated
Earth's orbit may be explained by Newton's Law of Gravitation and Newton's Law of :
inertia
What would happen to a planet if it stopped in its orbit around the sun?
it would crash into the sun.
Today, most places in the world have adopted the practice of beginning the new day at:
midnight
The Earth ______ on its axis
rotates
The ancient Jews began their day at:
sunset
In order for any satellite or spaceship to orbit the sun, it must be given an initial:
velocity
The calendar changes when a new day begins at:
180
In the military services, 6:00 p.m. would be written as:
1800
The tilt of the Earth's axis is about ______ degrees
23
How long does it take the Earth to make one complete rotation?
24 hours
By how much does the earth-Sun distance change?
3,000,000 miles
A circle surrounding the earth at the equator would consist of ___________ "degrees" of angular measurement.
360
The longest day of the year in the southern hemisphere is:
December 21
At the poles, the earth is about 790 miles in diameter. True or False?
False
Current modern scientific theories can adequately explain the origin of the planets and their orbits. True or False?
False
Earth's only motions are to rotate about its axis and to orbit around the sun. True or False?
False
Everything in space moves except the sun. True or False?
False
Newton's Law of inertia is sufficient to cause a planet to orbit the sun. True or False
False
The earth is perfectly round. True or False?
False
The solar day is the time that the earth takes to make one complete revolution around the sun. True or False?
False
The calendar day starts at the:
International Date Line
The 0° meridian is known as the:
Prime Meridian
_______ is a word that means firmly established; not changing, moving, or fluctuating.
Stable
The division of the earth's surface into twenty-four time zones is called:
Standard time
What is true of daylight hours at locations north and south of the equator?
The length of days and nights change with the seasons.
Which statement is correct about orbits?
The orbits of all planets, including the earth, are ellipses.
Which statement is true about the sun?
The sun appears to rise in the east and set in the west.
A day and night are always of equal time at the equator. True or False?
True
Earth appears to us to be very fixed and stable, but it is not. True or False?
True
Earth can be called a "spaceship" because it is like a vehicle carrying humans and other cargo through space. True or False?
True
One daylight period at the South Pole lasts twenty-four hours. True or False?
True
The atmosphere of the earth extends to about 1,000 miles beyond the surface. True or False?
True
The days and nights are always of equal time throughout the year at the equator. True or False?
True
The regular motions of the earth help support and sustain life. True or False?
True
Viewed from space, earth appears as a large sphere. True or False?
True
When it is sunny at the North Pole, it is dark at the South Pole. True or False?
True
The shape of the earth's orbit is a(n)
ellipse
The word equinox means _______.
equal nights
In the continental United States, there are _____ time zones.
four
