AnswersSLPS-2001310-EarthSpace B -GFClassification of Living Things

Classification of Living Things — Test Answers

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Why did scientists struggle for thousands of years to accurately describe the solar system?

A
Venus has phases like the moon.
B
Many people spoke Italian and did not understand Latin.
C
The planets appeared to move backward in the sky occasionally.
D
Scientists could not explain why the Sun appeared to rise and set every day.
2
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The orbital period of a satellite is 2 × 106 s and its total radius is 2.5 × 1012 m. The tangential speed of the satellite is m/s. (Round to the nearest whole number, do not add any punctuation.)

Answer not available
3

What occurs when Earth’s shadow covers the moon?

A
neap tide
B
spring tide
C
solar eclipse
D
lunar eclipse
4

What force acts between Earth and the moon?

A
gravity
B
mass
C
motion
D
newtons
5

Which causes objects in the universe to resist a change in speed or direction?

A
gravity
B
inertia
C
motion
D
orbit
6

Leo drew a force diagram to represent a satellite in orbit around Earth.

Question illustration
A
make the Fg vector longer
B
change the vector labeled Fair so it is labeled Fp
C
add an Fp vector at the center and pointing left
D
remove the Fair vector
7

In which direction does Earth rotate?

A
eastward around its axis
B
in an ellipse around the Sun
C
counterclockwise around the Sun
D
from north to south around its axis
8

Which remains the same as the distance of an object from Earth changes?

A
size of the force
B
strength of gravity
C
mass of the object
D
weight of the object
9

Cecelia dropped a ball from a height of 2 m. The ball fell in a straight path down to the ground.

A
tossing it horizontally at a slower speed
B
tossing it horizontally at a faster speed
C
dropping it from a shorter distance
D
dropping it from a greater distance
10

Which is a factor that keeps Earth in orbit around the Sun?

A
the orbital path of the moon
B
the gravitational pull of the Sun
C
the continuous motion of the universe
D
Earth’s changing speed and direction
11

What term describes the moon’s path around Earth?

A
eclipse
B
phase
C
revolution
D
rotation
12

Why are there two high tides a day about 12 hours apart from each other?

A
Earth revolves around the Sun once during that time.
B
Earth rotates entirely on its axis once during that time.
C
The moon revolves around Earth once during that time.
D
The moon’s orbit is in line with Earth’s orbit twice a day.
13

Whose data did Kepler use to construct the laws of planetary motion?

A
Aristarchus’s
B
Aristotle’s
C
Brahe’s
D
Copernicus’s
14

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?

A
Venus has phases.
B
The orbits of the planets are elliptical
C
Earth’s rotation causes the Sun to rise in the sky.
D
The planets move faster when they orbit closer to the Sun.
15

Which statement correctly describes terrestrial planets?

A
They are made of mostly rock.
B
They are made of gases.
C
They are small objects of ice and dust.
D
They are very large compared to other planets.

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