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Solar System and Stars
Solar System and Stars
20 terms
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This quiz is part of the preparation toward a quiz on Solar system and star for 8th graders.
Flashcards
20 cards
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Questions
20
Answers
1
Luminosity is:
the temperature of the star
the color of a star
how much light you get from a star
the total amount of light given off
2
A supernova is the product of the explosion of:
a supergiant star
black hole
low mass star
protostar
3
A main sequence star's main characteristic is its
death
stability
high density and mass
unstability
4
The round shape of a planet is due to
the hot core in their center
the presence of water
gravitational pull from the sun
its lack of nuclear reactions in their core
5
The image we get from Sirius as of today is how it looked
a second time ago
4.5 years ago.
one day ago
8 minutes ago
6
The radius of a red giant star is approximately:
19 AU
1.5 AU
19 AU
5.2 AU
7
The words proto-star mean:
before being a star
an exploded star
never being a star
after being a star
8
The unit to measure distances within the solar system is:
meters
AU
Kilometers
Light year
9
The life span of a star is shorter if
its mass is low
Its size and mass are high
it is a binary star
its mass is high
10
These are the only two planets with rings:
Venus and Saturn
Neptune
Mercury and Uranus
Saturn and Uranus
11
Between a pencil and a book there is a gravitational attraction
false
true
12
In order for a star to be born, ____________ needs to get started
water production
ammonia production
fusion of Hydrogen into helium process
Carbon atoms production
13
Nebulas are the opposite of
black dwarfs
main sequence stars
star nurseries
proto stars
14
Brighter and hotter stars are classified as
black holes
super giant stars
average stars
white dwarfs
15
When a high mass star dies, its final outcome may be:
a planet
a black dwarf
a nebula
a neutron star or a black hole
16
Comets are not observable often from Earth because of
Their tail
their short distance from the sun
Their elongated orbit
their circular orbit
17
The gravitational pull is directly proportional to the
tilt of the axis
type of planet
masses of two objects
distance between two objects
18
3 AU equals:
450 million kilometers
300 million kilometers
1.5 million kilometers
15 million kilometers
19
Once the sun becomes a red giant star, it will swallow:
Pluto only
Mercury Only
The terrestrial planets only
The entire solar system
20
The asteroid belt is _________ away from the Sun.
9 AU
1.7 to 4.5 AU
.75 AU
39.4 AU
