Use the photo to answer the following question: Which two arrows show the equal and opposite forces that demonstrate Newton’s Third Law that causes liftoff?

• A & C
• B & D
• C & D
• A & B

The chemical mixture that combines with the oxidizer for combustion in an engine is called a(n):

• Propellant
• Aileron
• Rudder
• Nozzle

Which of the following is a TRUE statement about liquid rocket fuel and solid rocket fuel?

• Solid rocket fuel has to be stored in two separate storage areas
• Liquid rocket fuel combines the fuel and the oxidizer into one solid mass.
• Solid rocket fuel is a thick mixture that is set on fire to create liftoff.
• Solid rocket fuel storage containers are combined in the combustor of the engine.

What is the role of gravity in space?

• The force of gravity holds Earth in orbit around the Sun and the Moon in orbit around the Earth.
• The force of gravity holds Earth in orbit around the Moon and the Sun in orbit around Earth.
• The force of gravity holds the Moon in orbit around the Sun and the Earth in orbit around the Moon.
• The force of gravity holds the Sun in orbit around the Moon and the Earth in orbit around the Sun.

What is orbiting?

• Orbiting is when a larger mass in space follows a continuous path around a smaller mass.
• Orbiting is when a smaller mass in space follows a continuous path around a larger mass.
• Orbiting is when a small mass in space follows in a continuous random path around a meteor

Humans need 125% more calories in space than on Earth. If Astronaut Thomas requires 2600 calories on Earth, how many calories will he need in space? (Hint: use a calculator)

• 3250 calories
• 867 calories
• 2725 calories
• 3000 calories

If Astronaut Lucy needs 2100 calories on Earth, approximately how many space calories will she need during each meal in space? (Hint: use a calculator and there are 3 meals per day)

• 2625 calories
• 700 calories
• 875 calories
• 900 calories

Humans need water and food in space to survive. However, it amount of each does differ. Which of the following statements is TRUE about food and water?

• Humans need 125% more calories in space than on Earth.
• Humans need more drinking water in space because they can dehydrate easily without gravity.
• Humans need more water for food in space because the packaged meals require large amounts of water.
• Humans need 125% more calories on Earth than in space.

Select the statement that correctly identifies an effect that microgravity has on the body.

• Bones gain 1% to 2% in density.
• The heart works much harder to pump blood around the body.
• Muscles weaken.
• Body fluids settle in astronauts’ legs and lower extremities.

Which machine is most important for leading the bones with "simulated gravity"? (The picture is just for decoration, not necessarily the answer)

• TEVIS (treadmill)
• ARED (deadlift machine)
• CEVIS (stationary bike)