Questions & Answers
Browse all 20 questions from the
Astrophysics and the Human Body study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which organ in the human body is primarily responsible for balancing, which becomes disoriented in the microgravity of space?
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A
The heart
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B
The inner ear
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C
The lungs
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D
The liver
2
What happens to the height of an astronaut while living in space due to the lack of gravity compressing their spine?
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A
They shrink
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B
They stay the same
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C
They grow taller
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D
They lose limbs
3
Which form of radiation, common in space, can cause damage to human DNA if not properly shielded?
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A
Visible light
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B
Cosmic rays
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C
Radio waves
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D
Infrared heat
4
What happens to an astronaut's bone density during long-duration space flight in microgravity?
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A
It increases
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B
It remains stable
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C
It decreases
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D
It turns into muscle
5
What is the primary gas, also found in the Earth's atmosphere, that astronauts must monitor in the space station to prevent hypercapnia?
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A
Carbon dioxide
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B
Helium
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C
Neon
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D
Argon
6
Which fluid in the human body shifts toward the head in microgravity, often causing a puffy face appearance?
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A
Bile
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B
Synovial fluid
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C
Blood and extracellular fluid
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D
Gastric acid
7
What is the main source of vitamin D that humans get on Earth, which must be supplemented in space?
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A
Sunlight
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B
Moonlight
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C
Starlight
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D
Nebula light
8
Space travel can affect the human circadian rhythm because astronauts experience how many sunrises per day in low Earth orbit?
-
A
One
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B
Sixteen
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C
Zero
-
D
One hundred
9
Which part of the eye can be affected by the pressure changes associated with fluid shifts in space?
-
A
The pupil
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B
The retina
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C
The iris
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D
The sclera
10
What is the term for the rapid loss of muscle mass that occurs when astronauts do not perform resistance exercise in space?
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A
Hypertrophy
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B
Atrophy
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C
Metabolism
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D
Ossification
11
Which celestial body's gravitational pull is responsible for the tides, which indirectly influence marine life cycles that humans consume?
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A
The Moon
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B
Mars
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C
Jupiter
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D
Saturn
12
Astronauts undergo physical training to counteract the effects of microgravity on which bodily system?
-
A
The cardiovascular system
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B
The digestive system
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C
The endocrine system
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D
The nervous system
13
What is the primary fuel source for the human body that astronauts must consume in specific amounts to maintain energy in space?
-
A
Nuclear energy
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B
Calories
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C
Solar radiation
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D
Kinetic energy
14
Exposure to what type of space-based environment can lead to a decrease in the production of red blood cells, known as 'space anemia'?
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A
High oxygen
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B
Microgravity
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C
Extreme heat
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D
Darkness
15
What protective gear must humans wear to prevent the vacuum of space from causing ebullism (gas bubbles forming in blood)?
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A
A pressurized space suit
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B
Sunglasses
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C
A raincoat
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D
A thermal blanket
16
Which major organ is responsible for filtering waste, a process that can be stressed by the increased calcium levels in astronaut blood?
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A
The brain
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B
The kidneys
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C
The pancreas
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D
The spleen
17
The Earth's magnetic field protects humans from solar particles; what is this shield called?
-
A
The atmosphere
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B
The magnetosphere
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C
The crust
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D
The mantle
18
What effect does the lack of gravity have on the human sense of taste, often making food seem blander?
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A
It increases sensitivity
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B
It causes congestion that dulls taste
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C
It creates a spicy sensation
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D
It has no effect
19
What is the main danger to human health from solar flares, which are intense bursts of radiation from the Sun?
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A
Radiation sickness
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B
Excessive sweating
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C
Increased hair growth
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D
Better sleep
20
In the context of space health, what does 'deconditioning' refer to?
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A
Learning new skills
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B
The body adapting to microgravity
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C
The cooling of space craft
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D
Eating too much food
