Gravity - Vocabulary Quiz

What is the branch of physics that deals with the motion of objects in orbit around celestial bodies?

(a)  

• Microgravity

• Space Debris

• Orbital Mechanics
• Radiation

The condition of experiencing very weak or negligible gravity is described as (a)  

• Microgravity
• Re-entry
• Trajectory
• EVA (Extravehicular Activity)

(a)   are man-made objects or fragments in orbit around Earth that pose a risk to spacecraft.

• Life Support Systems
• Space Debris
• Thrusters
• Radiation

Newton's Law that states an object at rest remains at rest unless acted upon by an external force is known as the (a)  

• Law of Acceleration
• Law of Action and Reaction
• Law of Inertia
• Law of Motion

The term for any activity performed by an astronaut outside of a spacecraft is (a)  

• Re-entry
• EVA (Extravehicular Activity)
• Trajectory
• Microgravity

The emission of energy in the form of electromagnetic waves or particles is called (a)   .

• Space Debris
• Radiation
• Microgravity
• Thrusters

(a)   provides the necessary resources to sustain human life in space.

• Thrusters
• Space Debris
• Life Support Systems
• Re-entry

Small rocket engines are used for (a)   in spacecraft.

• Providing life support

• Controlled propulsion and maneuveri

• Emitting radiation

• Collecting space debris

The process by which a spacecraft returns from space to Earth's atmosphere is called (a)  

• Trajectory
• Re-entry
• EVA (Extravehicular Activity)
• Microgravity

The path followed by an object in motion, such as a satellite in orbit, is determined by its (a)   .

• Life Support Systems
• Thrusters
• Trajectory
• Space Debris