Dr. Harris Chapter 1
The longest of the following is: 1mm; 0.00001km; 0.01in; 0.001ft
0.00001 km
A meter is not equal to
0.01 km
A centimeter is
0.01 m
The shortest of the following is: 10^4in; 10^4m; 10^3ft; 0.1mi
0.1 mi
The prefix giga stands for
1,000,000,000
The time needed for a planet to orbit the sun
depends on the average distance of the planet from the sun
The time at which a given star rises above the horizon each night is
earlier than the night before
Relative to the stars, the moon seems to move
eastward
The stars in a constellation
form a pattern in the sky as seen from the earth
Stars & planets are round because
gravity forces them into this shape
Living things
have evolved throughout the earth's history
When the sun, the earth, and the moon are all in line,
high tides are higher than usual & low tides are lower than usual
When first proposed, a scientific idea is usually called a
hypothesis
The speed of a planet in its orbit
is highest when it is closest to the sun
Astrology
is nonsense
What distinguishes the scientific method from other ways of looking at the natural world is
its reliance on experiment & observation
The discovery that the planetary orbits are ellipses rather than circles was made by
kepler
A regularity in observed data or a relationship between different quantities is usually called
law
Arrange the following planets in order of their distance from the sun: Venus, Mars, Earth, Mercury
mercury, venus, earth, mars
The length of the year is
more than 365 days
Scientific theories
must be constantly reviewed to see whether they are in accord with new experimental observations
A planet that cannot be seen with the unaided eye is
neptune
The period of the earth's orbit around the sun is
one year
The object in the sky that lies very nearly on an extension of the earth's axis is
polaris
Gravity is not
responsible for holding atoms & molecules together
In the distant past, the length of the day was
shorter than 24 hours
Kepler modified
the Copernican system
If the earth had no moon,
the average tidal range would be smaller
A day is the time needed for
the earth to turn completely on its axis
In which one or more of the following is the earth assumed to be the center of the universe?
the ptolemaic system
A year is the time needed for
the sun to drift completely around the sky
In most parts of the world, high tides occur approximately
twice a day
If the earth were to revolve on its axis slower than it does today, its shape
would be close to a perfect sphere
The British unit of length closest to the meter is the
yard
A person is 5 ft. 8 inches tall. This is equivalent to
173 cm
The size of a picture is given as 84 cm by 255 cm. Since (84)(255)=2.142 exactly, the area of the picture is correctly expressed as
2.1m^2
The number of cubic centimeters in a cubic foot is about
2.8 x 10^4
The scientist who showed that gravity accounts for Kepler's laws of planetary motion was
Newton
