L10-Rocket Science (Space,Physics)

Question 1

debris

space debris

Answer 1

pieces of material that are not wanted and rubbish/garbage that are left somewhere:
Clear away leaves and other garden debris from the pond. * the debris of their lunch

Question 2

unmanned spacecraft

Answer 2

describes a spacecraft, or a place where military guards work, that has no people present to operate or be in charge of it:
an unmanned mission to the planet Mars

Question 3

sustain

Answer 3

endure-retain
to provide enough of what sb/sth needs in order to live or exist:
Few planets can sustain life. * I only had a little chocolate to sustain me on my walk.

Question 4

eclipse

Answer 4

when the sun disappears from view, either completely or partly, while the moon is moving between it and the Earth, or when the moon darkens while the shadow (= darkness) of the Earth moves over it:
a solar/lunar eclipse
On Wednesday there will be a total/partial eclipse of the sun.

Question 5

climatic

Answer 5

climatic /klaɪˈmæt.ɪk/ US /-ˈmæţ-/
adjective
pertaining to climate (belong to-relate)
Some parts of the world seem to be experiencing climatic changes (= changes in general weather conditions).
climatology /ˌklaɪ.məˈtɒl.ə.dʒi/ US /-ˈtɑː.lə-/
noun [U]
the scientific study of general weather conditions

Question 6

penetrate

Answer 6

to move into or through something:
Amazingly, the bullet did not penetrate his brain.
In a normal winter, the frost penetrates deeply enough to kill off insect eggs in the soil.
رسوخ ،نفوذ کردن در،بداخل سرایت کردن ،رخنه کردن

Question 7

condense

Answer 7

to change from a gas into a liquid; to make a gas change into a liquid:

Question 8

dilute

Answer 8

to make a liquid weaker by adding water or another liquid to it.
The paint can be diluted with water to make a lighter shade.

Question 9

dissolve

Answer 9

/dɪˈzɒlv/ US /-ˈzɑːlv/

(of a solid) to be absorbed by a liquid, especially when mixed, or (of a liquid) to absorb a solid:
Dissolve two spoons of powder in warm water.
Nitric acid will dissolve most animal tissue.

Question 10

repel

Answer 10

if something repels you, it is so unpleasant that you do not want to be near it, or it makes you feel ill
if two things repel each other, they push each other
The smell repelled him.
away with an electrical force