Space Flight

Which of the following requires the most energy to be thrown in the air?

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NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-4

When you throw an object straight up, why doesn't it fly off into space?

• There's too much thrust acting on the object

• Earth's atmosphere prevents the object from going into space

• The object travels too fast to reach Earth orbit

• The force of gravity pulls the object back down to Earth

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NGSS.MS-PS2-4

Which two opposing forces are at work when a rocket flies into space?

• Drag and torque

• Gravity and thrust

• Thrust and torque

• Drag and gravity

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

A jet pack is a type of rocket system that can allow a human to "fly" for short distances. What can you infer about how jet packs work?

• The thrust created by a jet pack must be greater than the force of gravity acting on the user and the pack.

• The user must weigh less than the jet pack to lift off the ground.

• The weight of the fuel in the jet pack must be greater than the weight of the user in order to achieve liftoff.

• The force of gravity on the user must decrease as he is lifted off the ground.

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

In this illustration of a liquid-fuel rocket, which letter represents the payload?

• A

• B

• C

• D

What is one main difference between solid-fuel rockets and liquid-fuel rockets?

• Solid-fuel rockets don't require an oxidizer to work; liquid-fuel rockets do

• Liquid-fuel rockets can't lift heavy payloads; solid-fuel rockets can

• Solid fuel-rockets launch with pre-mixed fuel and oxidizer; liquid-fuel rockets combine the fuel and oxidizer at launch

• Liquid-fuel rockets contain a higher proportion of oxidizer to fuel than solid-fuel rockets do

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NGSS.MS-PS2-1

The combination of fuel and oxidizer in the presence of a spark or flame results in a combustion reaction. Which is another example of a combustion reaction?

• Mixing honey into a cup of tea

• Setting a piece of wood on fire

• Heating water until it boils

• Combining flour and sugar to make dough

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NGSS.MS-PS1-5

Put the following into the correct order for a rocket launch: A) Heated gas is expelled; B) Oxidizer and fuel mix; C) Force of thrust exceeds force of gravity on the rocket.

• A,B,C

• B,C,A

• B,A,C

• C,B,A

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NGSS.MS-PS2-2

Which part(s) of the U.S. space shuttle is/are not reusable?

• The orbiter

• The external fuel tank

• The solid rocket boosters

• The main engine nozzles

The farther apart two objects are, the weaker the force of gravity is between them. What can you infer from this?

• A body orbiting Saturn feels a weaker gravitational pull from Earth than a body orbiting Mars

• The Earth's gravity exerts a stronger pull on spacecraft orbiting the moon than spacecraft in low-earth orbit

• A spacecraft that has left the solar system feels no gravitational pull whatsoever from Earth

• Any spacecraft launched from Earth will, given enough time, eventually fall into the sun

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4