
Història de l'Univers
Authored by Antoni Ruiz
Biology
12th Grade
Used 3+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Què representa la teoria del Big Bang?
a) Una teoria sobre la formació de la Terra
b) Una teoria sobre l'origen de l'univers
c) Una teoria sobre la vida extraterrestre
d) Una teoria sobre la gravetat
Answer explanation
The Big Bang theory, represented in the question, is a widely accepted cosmological model that explains the origin of the universe. It states that the universe began from a singularity, a point of infinite density and temperature, and has been expanding ever since. Therefore, the correct choice is 'a theory about the origin of the universe'.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Què va ser la teoria de la relativitat d'Einstein?
a) Una teoria sobre la gravetat
b) Una teoria sobre la vida extraterrestre
c) Una teoria sobre la formació de la Terra
d) Una teoria sobre l'origen de l'univers
Answer explanation
The correct answer is 'Una teoria sobre la gravetat'. Albert Einstein's theory of relativity, includes the interrelated theories of special relativity and general relativity, proposes a revolutionary conception of the physical nature of gravity, altering our understanding of the fundamental laws of the universe.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. Què va ser el satèl·lit COBE?
a) Un satèl·lit que va estudiar la vida extraterrestre
b) Un satèl·lit que va estudiar la gravetat
c) Un satèl·lit que va estudiar l'origen de l'univers
d) Un satèl·lit que va estudiar la formació de la Terra
Answer explanation
The correct answer is 'Un satèl·lit que va estudiar l'origen de l'univers'. The COBE (Cosmic Background Explorer) satellite was specifically designed to investigate the cosmic microwave background radiation from the Big Bang, thus studying the origin of the universe. This rules out the other options which suggest it studied extraterrestrial life, gravity, or Earth's formation.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Què va ser el satèl·lit WMAP?
a) Un satèl·lit que va estudiar la vida extraterrestre
b) Un satèl·lit que va estudiar la gravetat
c) Un satèl·lit que va estudiar l'origen de l'univers
d) Un satèl·lit que va estudiar la formació de la Terra
Answer explanation
The WMAP satellite was primarily used to study the origin of the universe. It did not focus on the study of extraterrestrial life, gravity, or the formation of Earth. Therefore, the correct answer is 'A satellite that studied the origin of the universe'.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. Què va ser el satèl·lit Planck?
a) Un satèl·lit que va estudiar la vida extraterrestre
b) Un satèl·lit que va estudiar la gravetat
c) Un satèl·lit que va estudiar l'origen de l'univers
d) Un satèl·lit que va estudiar la formació de la Terra
Answer explanation
The Planck satellite, as the correct answer indicates, was tasked with studying the origin of the universe. The other options, while interesting, were not the primary focus of this satellite. The Planck satellite's mission was to analyze the Cosmic Microwave Background, offering insights into the universe's origins.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6. Què és la matèria fosca?
a) Una forma de matèria que no emet llum ni radiació
b) Una forma de matèria que només es troba a la Terra
c) Una forma de matèria que només es troba a la Via Làctia
d) Una forma de matèria que només es troba a altres galàxies
Answer explanation
Dark matter is a type of matter that does not emit light or radiation, making it invisible to our current instruments. It can only be detected through its gravitational effects. Other options suggesting that dark matter is only found on Earth, in the Milky Way, or in other galaxies are incorrect as dark matter is believed to be present throughout the universe.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7. Què són les ones gravitacionals?
a) Ones electromagnètiques que es propaguen a través de l'espai
b) Ones sonores que es propaguen a través de l'espai
c) Ones que es propaguen a través de l'espai-temps i són causades per objectes massius en moviment
d) Ones que es propaguen a través de l'espai-temps i són causades per la radiació de fons
Answer explanation
Gravitational waves propagate through space-time and are caused by massive moving objects. These are not electromagnetic or sound waves, nor are they caused by background radiation. The question was about the nature of gravitational waves, and this option correctly describes them.
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