Preview (15 questions)
1 Question
לפני 30 שניות
Q.

How many kilometers is the star from the sky?


170 million km

151 million km

10 million km

144 million km

2 Question
לפני 30 שניות
Q.

From which country does the word star come?


Cuba

German

Italy

Greek

3 Question
לפני 30 שניות
Q.

What type of star was closest to the Earth?


Proxima Centauri

Beta Centauri

Theta Centauri

Epsilon Centauri

4 Question
לפני 30 שניות
Q.

Who discovered the constellation of Leo?


Aristotle

Ptolemy

Nicolaus Copernicus

Plato

5 Question
לפני 30 שניות
Q.

Which star was a remnant of a supernova first observed around 1050 AD?


Vela Pulsar

Crab Pulsar

Crab Nebula

Geminga

6 Question
לפני 30 שניות
Q.

Where are stars first formed?


In the Supernovae

Inside the protogalaxies

Outside the galaxy

None of the above

7 Question
לפני 30 שניות
Q.

A star is made of liquids.


True

False

8 Question
לפני 30 שניות
Q.

What is the size of a star?


1.5 million kilometers across

1.7 million kilometers across

1.8 million kilometers across

1.4 million kilometers across

9 Question
לפני 30 שניות
Q.

Who created the first star catalog in astronomy?


Eudoxus of Cnidus

Hipparchus

Aristarchus of Samos

Eratosthenes

10 Question
לפני 30 שניות
Q.

What kind of star did Edward Pickering discover?


spectroscopic binary stars

stellar spectroscopy

magnetic field

Orion constellation

11 Question
לפני 30 שניות
Q.

How many stars are there in the universe?


up to one trillion stars

up to one million stars

up to one septillion stars

up to one billion stars

12 Question
לפני 30 שניות
Q.

How many stars are visible at night from Earth?


3000

2000

5000

6000

13 Question
לפני 30 שניות
Q.

What method does a star use to burn hydrogen into helium?


All the above

Nuclear power

Nuclear fission

Nuclear fusion

14 Question
לפני 30 שניות
Q.

How many constellations are there in the night sky?


55

99

88

77

15 Question
לפני 30 שניות
Q.

Which type of supernova is the result of the collapse of the core of a massive star?


Type Ib and Ic supernovae

Type Sb and Ic supernovae

Type IL and IK supernovae

Type IV and Ic supernovae