System 101 Question Set 1

What is the primary function of a satellite in geostationary orbit?

• Space exploration
• Earth observation
• Communications
• Space debris removal

Answer explanation

Geostationary satellites are used for communications because they remain over the same point on Earth.

Which of the following best defines "space situational awareness" (SSA)?

• Knowing the position of space weather systems
• Monitoring and understanding the space environment
• Observing black holes
• Measuring the distance to the Moon

Answer explanation

SSA involves tracking space objects and understanding space weather effects on spacecraft.

What is the main source of energy for satellites in orbit?

• Nuclear reactors
• Solar panels
• Battery power
• Fuel cells

Answer explanation

Satellites primarily use solar panels to convert sunlight into electrical energy.

Which of the following is the leading cause of space weather disturbances?

• Asteroids
• Cosmic rays
• Solar flares
• Space debris

Answer explanation

Solar flares can significantly disturb the Earth’s magnetosphere, causing space weather effects

What is the primary consequence of a satellite collision in orbit?

• Debris generation
• Increased solar activity
• Gravitational anomalies
• Loss of satellite communication

Answer explanation

Satellite collisions create space debris, which increases risks for other spacecraft.

What altitude range is typical for low Earth orbit (LEO)?

• 10,000-12,000 km
• 400-2,000 km
• 5,000-7,000 km
• 1,000-10,000 km

Answer explanation

Low Earth orbit extends from around 400 km to 2,000 km above the Earth's surface.

Which international treaty governs the peaceful use of outer space?

• The Moon Treaty
• The Antarctic Treaty
• The Outer Space Treaty
• The Space Arms Control Act

Answer explanation

The Outer Space Treaty, established in 1967, governs the exploration and use of outer space.

Which type of orbit is most suitable for global weather monitoring satellites?

• Polar orbit
• Geostationary orbit
• Low Earth orbit
• Molniya orbit

Answer explanation

Geostationary orbits are ideal for weather monitoring since they provide a constant view of the same region.

What is the primary function of a satellite's attitude control system?

• To power the satellite
• To change its orbital height
• To orient the satellite properly in space
• To collect solar energy

Answer explanation

The attitude control system helps maintain the satellite’s orientation for optimal functionality.

Which space debris mitigation strategy involves deorbiting a satellite after its mission?

• Passivation
• Shielding
• Post-mission disposal
• Orbital adjustment

Answer explanation

Post-mission disposal requires a satellite to either deorbit or move to a graveyard orbit after its mission.