CHI Scientific Method Homework
A week is the time needed for
-the sun to drift completely around the sky -the moon to drift completely around the sky. -the earth to turn completely on its axis. (None of the above)
The longest of the following is 1 mm. 0.00001 km. 0.01 in. 0.001 ft.
0.00001 km
A meter is not equal to 100 cm 103 mm 0.01 km 10^-3 km
0.01 km.
A centimeter is 0.001 m. 0.01 m. 0.1 m. 10 m.
0.01 m.
The shortest of the following is 10^4 in. 10^4 m 10^3 ft 0.1 mi.
0.1 mi.
The prefix giga stands for
1,000,000,000
A nautical mile (nm) is 6076 ft long, and a knot (kn) is a unit of speed equal to 1 nm per hour. How many feet per second does a 10-kn boat moive through the water?
17 ft/s
A person is 5 ft 8.0 in. 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
2.1 m^2
The number of cubic centimeters in a cubic foot is about
2.8 × 10^4
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 planet that cannot be seen with the unaided eye is
Neptune
The scientist who showed that gravity accounts for Kepler's laws of planetary motion was
Newton
The period of the earth's orbit around the sun is A. one day. B. one week. C. one month. D. one year
One year
The object in the sky that lies very nearly on an extension of the earth's axis is
Polaris
Kepler modified which system?
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.
Which of the following statements is true? -High tides are caused by the sun, low tides by the moon. -Low tides are caused by the sun, high tides by the moon. -The moon is chiefly responsible for the tides, with the sun's influence modifying the tidal range. -The sun is chiefly responsible for the tides, with the moon's influence modifying the tidal range.
The moon is chiefly responsible for the tides, with the sun's influence modifying the tidal range.
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 and 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 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.
What distinguishes the scientific method from other ways of looking at the natural world is-
its reliance on experiment and observation.
A regularity in observed data or a relationship between different quantities is usually called a
law
Scientific theories
must be constantly reviewed to see whether they are in accord with new experimental observations.
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.
A year is the time needed for
the sun to migrate completely around the sky
Astrology
theory of the influence of planets and stars on human events. And is complete bullshit.
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 a perfect sphere
The British unit of length closest to the meter is the
yard