Welcome to your GRADE 7 GENERAL SCIENCE CHAPTER 6
After carefully reading the following 30 questions, choose the correct answer.
1.
What is the approximate shape of the Earth?
2.
Which part of the Earth is the solid, outermost layer?
3.
What is the thickest interior layer of the Earth?
4.
Which layer of the atmosphere is closest to the Earth's surface?
5.
Which atmospheric layer contains the ozone layer?
6.
What movement of the Earth causes day and night?
7.
How long does it take for the Earth to complete one rotation on its axis?
8.
What is the movement of the Earth around the sun called?
9.
Approximately how many days does it take for the Earth to revolve once around the sun?
10.
Which phenomenon is the primary result of the Earth's revolution and axis tilt?
11.
At which position are the sun's rays direct on the equator, resulting in equal day and night?
12.
Which date is associated with the Winter Solstice in the Northern Hemisphere?
13.
What is the term for the boundary between the crust and the mantle?
14.
Which layer of the Earth is believed to be in a liquid state?
15.
What is the name of the atmospheric layer where weather occurs?
16.
Which atmospheric layer is the coldest?
17.
On what date do the sun's direct rays fall on the equator during the spring equinox?
18.
What is the main cause of the cycle of the seasons?
19.
Which layer of the atmosphere reflects radio waves?
20.
What provides the best evidence for the Earth's spherical shape from the text?
21.
What is the boundary at the top of the stratosphere called?
22.
Which gas is the most abundant in the Earth's atmosphere?
23.
What happens to atmospheric temperature in the troposphere as altitude increases?
24.
Which layer of the Earth is the hottest and is composed mainly of iron and nickel?
25.
What is the tilt of the Earth's axis in degrees?
26.
Which position in Earth's orbit results in the longest day in the Northern Hemisphere?
27.
What is the approximate elevation of the stratopause?
28.
Which date is the Autumnal Equinox?
29.
What is the name of the movement where Earth spins on its axis?
30.
Which layer of the Earth is found between the crust and the core?
