Physical Science (PSY151) Chapter 1: Les Thomas
The shortest of the following is
0.1 mi.
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
Stars and planets are round because
gravity forces them into this shape.
Gravity is not
responsible for holding atoms and molecules together.
In the distant past, the length of the day was
shorter than 24 hours
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 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 closer to perfect shape
A mast is 60 ft tall. The SI equivalent of this height is
18.3m
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
2.1 m 2.
The number of cubic centimeters in a cubic foot is about
2.8 10 4.
A constellation is
an apparent pattern of stars in the sky.
The longest of the following is
0.00001 km.
A centimeter is
0.01 m
A meter is not equal to
0.01km
The prefix giga stands for
1,000,000,000.
The measurements of a room are given as length = 5.28 m and width = 3.1 m. Since (5.28)(3.1) = 16.368, the room's area is correctly expressed as
16m2
A person is 5 ft 8.0 in. tall. This is equivalent to
173 cm.
Arrange the following planets in the order of their distance from the sun. 1. Venus 2. Mars 3. Earth 4. Mercury
4, 1, 3, 2
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 a
Law
A planet not visible to the naked eye is
Neptune
The scientist who showed that gravity accounts for Kepler's laws of planetary motion was
Newton
A week is the time needed for
None of the choices are correct.
Which of the following statements is true?
The moon is chiefly responsible for the tides, with the sun's influence modifying the tidal range
The object in the sky that lies very nearly on an extension of the earth's axis is
The object in the sky that lies very nearly on an extension of the earth's axis is
High tides occur
as often as low tides.
When the sun, the earth, and the moon are all in line,
high tides are higher than usual and 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 and observation.
When a planet is farthest from the sun in its orbit,
its speed is least.
The length of the year is
more than 365 days.
Living things
must be constantly reviewed to see whether they are in accord with new experimental observations.
Scientific theories
must be constantly reviewed to see whether they are in accord with new experimental observations.
The period of the earth's orbit around the sun is
one year
Kepler modified
the Copernican system
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 earth to turn completely on its axis.
Leap years are needed because
the length of the year is not a whole number of days
The British unit of length closest to the meter is the
yard