12.1 Homework sheet

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12.1 Homework sheet
EGYPTIAN AMERICAN INTERNATIONAL SCHOOL
Elementary Science Department
SEMESTER 2 GRADE 6
Name:
Date:
Class:
Homework sheet 12.1
Vocabulary review
Match each term in column B with its meaning in column A.
Column A
Column B
______1.
A nearly round body, slightly smaller than
a planet, whose orbit crosses the orbit of another body
A. solar system
______2.
A star and all the planets and other bodies that revolve
B. planet
around it.
______3.
A large, round body that revolves around
a star.
C. asteroid
______4.
A chunk of rock or iron less than 1,000 km (621 mi) in diameter
D. dwarf planet
that orbits the sun.
______5.
A chunk of frozen gases, rock, ice, and dust orbiting the sun.
E. comet
SCIENCE CONCEPTS
Write the letter of choice that best answers the question
_____1.
Josleen divided some of the planets into two main groups. The table below shows how she
grouped them.
Which two categories did Josleen most likely use to group the planets?
planets and dwarf planets
with moons and without moons
orbit the sun and orbit other bodies
Group 1
Group 2
Mercury
Saturn
Mars
Uranus
Venus
Jupiter
small diameters and large diameters
_____2.
It is difficult to see the surface of Venus through a telescope. Which feature of Venus best
explains why its surface is difficult to observe from Earth?
It is surrounded by thick clouds.
It is covered completely by water.
It is too far from Earth to be seen.
It does not produce light of its own.
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_____3.
Why is the sun considered the center of the solar system?
It is closer to Earth than other stars.
The sun produces light and energy.
The sun is the largest object that can be seen.
Everything in the solar system revolves around the sun.
_____4.
Paul created a poster showing the solar system. Paul’s
poster is shown below.
Which of these details in Paul’s poster is most accurate?
the order of the planets
the number of moons shown
the distances between the planets
the sizes of the planets and the sun
_____5.
Ganymede is a moon of Jupiter. It is larger than Mercury and has a metallic core similar to
Earth’s core. Which of these statements best explains why Ganymede is classified as a moon rather than
a planet?
It is too large to be called a planet.
It orbits Jupiter instead of the sun.
Its properties are different from Jupiter’s.
It is farther from the sun than Mercury.
APPLY INQUIRY AND REVIEW THE BIG IDEA
Answer the following question:
The planets are divided into rocky planets and gas giants. The gas giants are larger than the rocky planets but
have lower densities. Explain how this is possible.
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