Science department Quarter 3 ( 2014/2015 ) Grade 5 Revision Sheet Name: Class: Multiple Choice



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____ 25. The diagram below shows a planet and the sun.

What does the arrow on the diagram show?




A.

how the planet rotates on its axis

B.

the gaseous nature of the planet

C.

why the planet has seasons

D.

how the planet revolves around the sun

____ 26. Why is the sun considered the center of the solar system?




A.

It is closer to Earth than other stars.

B.

The sun produces light and energy.

C.

The sun is the largest object that can be seen.

D.

Everything in the solar system revolves around the sun.

____ 27. The diagram below shows the orbit of Earth and the orbit of Borrelly.



Which of these types of space objects is Borrelly most likely to be?




A.

an asteroid

B.

a comet

C.

a moon

D.

a planet

____ 28. 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?



A.

It is too large to be called a planet.

B.

It orbits Jupiter instead of the sun.

C.

Its properties are different from Jupiter’s.

D.

It is farther from the sun than Mercury.

____ 29. During a visit to an observatory, Silvano observed the moon, Venus, the sun, and the star Sirius. Which of these objects is outside of the solar system?



A.

Sirius

B.

Venus

C.

Sun

D.

Moon

____ 30. Which of these characteristics distinguishes the outer planets from the inner planets?




A.

The outer planets have many moons.

B.

The outer planets orbit in a different direction.

C.

The outer planets have higher densities.

D.

The outer planets have smaller diameters.

____ 31. Earth and Saturn are both planets orbiting the sun. Which of these other features do the two planets have in common?




A.

They have a thin atmosphere.

B.

They rotate about an axis.

C.

Their orbits are the same length.

D.

They have about the same mass.

____ 32. The masses of objects in the solar system can be reported by comparing them to the mass of Earth. Which of these planets in the solar system most likely has a mass more than 300 times greater than the mass of Earth?



A.

Jupiter

B.

Mercury

C.

Mars

D.

Venus

____ 33. A comet is a chunk of frozen gases, rock, ice, and dust. When does a comet form a visible tail?




A.

at the farthest point of its orbit

B.

as it crosses Earth’s orbit

C.

when it leaves the asteroid belt

D.

when it passes close to the sun


Short answers:

1. Most fossils are made of hard parts—bones, shells, or teeth. Soft parts such as skin, organs, eyes and muscle are rarely preserved as fossils. Why is this so?


2. 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.
3. During the gold rush, many miners were fooled into thinking that pyrite was gold. In fact, pyrite is sometimes called “fool’s gold.”

Mineral

Hardness

Streak

Color

Gold

2.5 to 3

yellow

yellow

Calcite

3

white

colorless or white

Hematite

5.5 to 6.5

reddish-brown

steel-gray to black, sometimes red

Feldspar

6

none

colorless or pink

Pyrite

6 to 6.5

greenish-black

yellow

Quartz

7

none

colorless, pink, brown, and many other colors

Study the table. If someone gave you two yellow minerals, how could you tell which was pyrite and which was gold?
4. Jupiter and Saturn are both gas giants. Describe two features of Jupiter and Saturn that are the same and two features that are different.

Model Answers:

Multiple choice:


  1. A

  2. C

  3. A

  4. C

  5. A

  6. A

  7. C

  8. B

  9. D

  10. C

  11. C

  12. D

  13. D

  14. C

  15. A

  16. C

  17. D

  18. C

  19. D

  20. C

  21. B

  22. A

  23. C

  24. D

  25. A

  26. D

  27. B

  28. B

  29. A

  30. A

  31. B

  32. A

  33. D


Short answers:

1. Sample answer: Soft parts are very easily eaten by predators or decomposed by bacteria. Over time, it is the hard parts that are left behind.

2. Sample answer: The gas giants are larger than the rocky planets but have only a small core. They have very thick atmospheres. This is why they are larger than the rocky planets but have lower densities.

3. Sample Answer: The hardness and streak of both minerals could be tested. Pyrite is harder than gold and has a greenish-black streak.

4. Sample answer: Jupiter and Saturn are both very large planets with large diameters. They also both have thick atmospheres. One difference between Jupiter and Saturn is that Jupiter is closer to the sun. Saturn also has the unique feature of having obvious rings around it.

Students may include these similarities:

• small, solid core

• thick atmosphere

• large size

large diameter

• large mass

• low density

• long period of revolution

orbit the sun

• great distance from the sun

• many moons


Students may include these differences:

• Saturn is farther from the sun than Jupiter.

• Jupiter is larger than Saturn.

• Jupiter has a larger diameter than Saturn.

• Jupiter has a greater mass than Saturn.

• Jupiter has a large red spot.



• Saturn has well-defined rings.

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