11.
A meteor that reaches the Earth’s surface is called a
.
Re ga le du ca tio n
12.
is the search, observation and collection of data in space.
13.
A is an instrument that makes objects that are re far away awa look closer and clearer.
14.
All of the planets, their moons and other objects orbiting the Sun make up our .
15.
are large rocks that can range in size from just jus a few centimeters up to thousands of kilometers.
16.
A meteoroid that enters the Earth’s atmosphere sphere is called a
17.
are objects sent into space e to make observations and collect data which is sent back to Earth for analysis. ana
.
Review
1.
What causes the alternation on of day an and night on Earth?
2.
What causes the changes in seaso seasons on Earth?
3.
How long does it take e for: (a) the Earth to complete one o rotation? (b) the Earth to complete one revolution of the Sun? n to comple (c) the moon complete one revolution of the Earth?
4.
List the planets system. Indicate which are the inner planets nets in the solar s and which outer planets. ch are the oute
5.
Why are the ou outer planets much colder than the inner planets?
6.
Listt three typ types of satellites sent into space by people.
7.
What are space probes? What do they do?
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