<< Chapter < Page Chapter >> Page >

4. On which planet is there a large amount of the material used in car batteries to be found?

_____________________________________________________________________

5. Why is the maximum temperature on Mars much higher than that on Neptune?

_____________________________________________________________________

_____________________________________________________________________

6. On which other body besides Earth in our solar system have people walked?

_____________________________________________________________________

7. Why is Mars sometimes called the Red Planet?

_____________________________________________________________________

_____________________________________________________________________

8. Why is life as we know it possible on Earth?

_____________________________________________________________________

_____________________________________________________________________

9. Radio signals take more than an hour to reach the earth from Saturn. What dangers could this hold for spacecraft undertaking exploration?

_____________________________________________________________________

_____________________________________________________________________

(10)

TASK 6: TRANSLATE FROM TABLE TO GRAPH

Show two of the columns of information below by means of graphs. Use columnar, circular or linear graphs.

Planet Distance from the sun in millions of kilometres Radius in km Number of moons Average speed in km per second
M ercury 58 4 878 0 48
V enus 108 12 104 0 35
Earth 150 12 756 1 30
M ars 228 6 794 2 24
J upiter 778 142 800 16 13
S aturn 1 427 120 000 17 10
U ranus 2 870 52 000 15 7
N eptune 4 497 48 000 2 5
P luto 5 900 2 400 1 5
Criteria for Assessing Graphs 1. 2. 3. 4.
1. Heading
2. Description of both axes
3. Scale correctly shown
4. Co-ordinates correctly shown
5. Completeness
6. Neatness and care taken

Comment:

TASK 7

Use the information in the tables to make deductions and to answer the following questions:

1. Which two planets are the closest together?

_____________________________________________________________________

_____________________________________________________________________

2. What is the ideal distance from the sun for human survival?

_____________________________________________________________________

_____________________________________________________________________

3. Which planet has a radius about twice that of Pluto?

4. Which two planets besides Earth could possibly be a home for humans?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

5. Has the distance from the sun any influence on the average speed of a planet? Which rule could you make for this?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

6. Give a possible explanation for this.

_____________________________________________________________________

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Natural sciences grade 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11077/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natural sciences grade 7' conversation and receive update notifications?

Ask