Final REVIEW 25 Astro

What psychological challenge is commonly faced by astronauts during long missions?

• Excessive excitement
• Isolation and confinement
• Overstimulation from surroundings
• Constant social interaction

Which one is a major effect of microgravity on the human body?

• Enhanced muscle strength
• Increased bone density
• Muscle atrophy and bone density loss
• Improved cardiovascular health

Why is solar radiation a significant concern for astronauts?

• It boosts vitamin D production
• It can cause cell damage and increase cancer risk
• It improves electronic equipment performance
• It has no effect due to spacecraft shielding

What is the primary purpose of the International Space Station (ISS)?

• To serve as a military station
• To conduct scientific research in a microgravity environment
• To act as a space tourism destination
• To function as a storage facility for satellites

What is a common method to protect astronauts from solar radiation?

• Applying sunscreen
• Using shielding materials and limiting exposure time
• Drinking more water
• Wearing sunglasses

How does space debris pose a threat to spacecraft?

• It creates beautiful light shows
• It can damage satellites and endanger astronauts
• It enhances communication signals
• It helps in navigation

What is the difference between waxing and waning?

• A) Waxing means decreasing illumination; waning means increasing
• B) Waxing means increasing illumination; waning means decreasing
• C) Waxing occurs after a full moon; waning occurs before
• D) There is no difference

Why does the Moon have significantly more visible impact craters than Earth?

• The Moon is closer to the asteroid belt, resulting in more frequent impacts.
• Earth's atmosphere and geological activity erases most impact craters over time.
• The Moon's surface is composed of materials that attract more meteoroids.
• Earth's magnetic field deflects all incoming meteoroids away from its surface.

What is the difference between a meteor, meteorite, and a meteoroid?

• the size
• the location
• the amount of gas

One YEAR on Earth is equal to one __________ around __________.

• revolution, Earth
• rotation, Earth
• revolution, sun
• rotation, sun