Question 1

expensive, δαπανηρός

Accepted Answer

costly

Question 2

bot relating to a particular situation and therefore not important άσχετος

Accepted Answer

irrelevant

Question 3

bringing great change επαναστατικός

Accepted Answer

revolutionary

Question 4

impressive θεαματικός

Accepted Answer

spectacular

Question 5

using too much  σπάταλος

Accepted Answer

wasteful

Question 6

send   ακτινοβολώ

Accepted Answer

beam

Question 7

change the way sth looks so it becomes hard to recognise διαστρεβλώνω

Accepted Answer

distort

Question 8

seriously   στα σοβαρά

Accepted Answer

in earnest

Question 9

a quality that makes you continue and not give up  αποφασιστικότητα

Accepted Answer

determination

Question 10

to send out  εκπέμπω

Accepted Answer

emit

Question 11

an amount of sound that is produced by sth for a short time  παλμός, σφυγμός

Accepted Answer

pulse

Question 12

change sth completely  φέρνω επανάσταση

Accepted Answer

revolutionise

Question 13

because of  χάρη στο

Accepted Answer

thanks to

Question 14

to draw attention to  επισημαίνω

Accepted Answer

point out

Question 15

layer of gas around a planet   ατμόσφαιρα

Accepted Answer

atmosphere

Question 16

exact   ακριβής

Accepted Answer

precise

Question 17

circling the Earth   σε τροχιά

Accepted Answer

in orbit

Question 18

sb who designs rockets επιστήμονας πυραύλων

Accepted Answer

rocket scientist

Question 19

sb who studies astrophysics(the structure of the stars and the forces that influences them)  αστροφυσικός

Accepted Answer

astrophysicist

Question 20

first αρχικός

Accepted Answer

initial

Question 21

give someone or something the same name as another person or thing δίνω σε κπ/κτ το όνομα κάποιου/κάτι

Accepted Answer

name sb/sth after sb/sth

Question 22

κάνω σέρβις

Accepted Answer

service

Question 23

decay;seperate into smaller pieces   υποβαθμίζω, διασπώ

Accepted Answer

degrade

Question 24

a machine or person that takes the place of another one  διάδοχος

Accepted Answer

successor

Question 25

creating a map using sound reflection  χαρτογράφηση με σόναρ

Accepted Answer

Sonar mapping

Question 26

unusual or impressive  εξαιρετικός, εκπληκτικός

Accepted Answer

extraordinary

Question 27

a mouse like animal with wings  νυχτερίδα

Accepted Answer

bat

Question 28

to discover υπολογίζω, προσδιορίζω, καθορίζω

Accepted Answer

determine

Question 29

to hit a surface and then move quickly away from it αντανακλώ, αναπηδώ

Accepted Answer

bounce

Question 30

a sound that you hear again after a loud noise because it was made near sth such as a wall   ηχώ, αντίλαλος

Accepted Answer

echo

Question 31

the way that sth is made δομή

Accepted Answer

structure

Question 32

a piece of equipment used to emit sound μεγάφωνο, ηχείο

Accepted Answer

loudspeaker

Question 33

a short high-pitched noise ήχος κουδουνιού

Accepted Answer

ping

Question 34

send back an image, light or sound off a surface  αντανακλώ

Accepted Answer

reflect

Question 35

to catch  αιχμαλωτίζω

Accepted Answer

capture

Question 36

to equip with εξοπλίζω

Accepted Answer

fit with

Question 37

to write down καταγράφω

Accepted Answer

record

Question 38

how deep sth is  βάθος

Accepted Answer

depth

Question 39

a flat area of land πεδιάδα

Accepted Answer

plain

Question 40

a particular quality of the land γεωλογικό χαρακτηριστικό

Accepted Answer

geological feature

Question 41

not simple  περίπλοκος

Accepted Answer

complicated

Question 42

find ανιχνεύω

Accepted Answer

detect

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