Set 25B

A rocket is a device powered by _____ .

• a gasoline engine

• a reaction engine

• a double-reaction engine.

• a nuclear engine

Rockets operate ___'s 3rd law- for every action there is an equal and opposite reaction.

Tags

NGSS.MS-PS2-1

____ was the first man made satellite.

Answer explanation

Yes, you need to say Sputnik I... the I is important, just like the 11 in important in Apollo 11

A __ is just far enough away from the earth’s surface to be out of the atmosphere (100 miles).

• very tall radio tower

• geostationary satellite

• lunar based satellite

• low earth orbit satellite

Answer explanation

MORE of them are necessary (because they cover less of the earth’s area).

BUT, they are more less expensive.

A ___ is very far away (21,000 miles) from earth (extremely high altitude).

• very tall radio tower

• geostationary satellite

• lunar based satellite

• low earth orbit satellite

Answer explanation

Less of them are necessary (because they cover more of the earth’s area).

BUT, they are more expensive.

Satellites are used for: 

• public service: weather & navigation systems 

• Science: studying the earth’s surface, climates, salinity, ice cover, etc.  

• Business: TV, internet, phone, etc

• Military: spy & communication

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS3-2

___ are spacecraft that leave Earth’s orbit (and explore other parts of space).

Because the moon is close to Earth, compared to other planets, it is a very simple mission to send a probe to it.

TRUE / FALSE

• TRUE

• FALSE

Answer explanation

It is still 250,000 miles away and A LOT can go wrong in space!

Probes that are traveling long distances often require __ assistance in order to generate enough speed to make it to the edge of our solar system.

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

___ are probes that are designed to land softly on a planet/moon and deploy a ___ to explore the surface of that planet/moon.

• Landers / rover

• Rovers / lander

• Satellites / rovers

• Probes / lander