Space and Materials Quiz

Which of the following best describes the terms:

1. Satellite
2. Geostationary Satellite
3. Moon
4. Exoplanet

• Celestial bodies orbiting around planets or stars

• A satellite with an orbital period that matches Earth's rotation on its axis

• A natural satellite of Earth

• A planet that orbits a star outside the solar system

What is an exo-planet?

• A planet that has no atmosphere
• A planet that orbits a star within our solar system
• A planet that is made entirely of water
• A planet that orbits a star outside of our solar system

What does the 'orbital period' of an object (such as a satellite) refer to?

• The time it takes for an object to complete one rotation on its axis

• The time it takes for an object to complete one orbit around another object

• The distance an object travels in one orbit

• The speed of an object in orbit

Calculate how far one light-year is in metres.

• 9.461 x 10^15 metres

• 5.879 x 10^12 kilometres

• 1.609 x 10^13 metres

• 7.214 x 10^16 metres

List the EM spectrum in order.

• Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays

• Gamma rays, X-rays, Ultraviolet, Visible light, Infrared, Microwaves, Radio waves

• Visible light, Infrared, Microwaves, Radio waves, Ultraviolet, X-rays, Gamma rays

• Ultraviolet, Visible light, Infrared, Microwaves, Radio waves, X-rays, Gamma rays

Probes communicate with Earth by sending radio signals. What is the speed that radio waves travel at through space?

• Speed of Light

• Speed of Sound

If a probe is 2.5x10^11 m away from Earth, calculate the time it takes for a radio signal from this probe to reach Earth.

• 833.33 seconds
• 1000 seconds
• 500 seconds
• 250 seconds

Satellite A is in a low-Earth orbit. Satellite B is in a high-Earth orbit. This means A has a smaller orbital radius. Which satellite has the largest orbital period?

• Satellite A

• Satellite B

• Both have the same orbital period

• Cannot be determined

Which of the following is a pro and a con of placing a telescope in space?

• Pro: Clearer view of space, Con: High maintenance costs

• Pro: Not affected by Earth's atmosphere, Con: Difficult to repair

• Pro: Can operate 24/7, Con: Affected by weather conditions

• Pro: Less expensive to build, Con: Limited by technology

A cuboid made of plastic is measured and is found to have the following dimensions: 14 cm x 8 cm x 12 cm. Calculate the volume of the object.

• 1560 cubic cm
• 1008 cubic cm
• 1344 cubic cm
• 1120 cubic cm