This is force that pulls objects toward the center of the Earth.
Gravity
100
Earth's gravity does this to us:
It keeps us on the ground.
100
Which type of space technology allows us to see into space from here on Earth?
A Telescope
100
Name an advantage of using a telescope on Earth.
Allows us to see objects in space; Easy to maintain and fix
100
True or False
There is no gravity in space.
False (There is gravity in space; it is just less than what we would experience on the surface of a planet)
200
This is the name of the unit used to measure force.
Newton (N)
200
This is the man who experimented with gravity.
Sir Isaac Newton
200
Which type of space technology allows people to travel into space?
A Space Shuttle
200
Name a disadvantage of using rockets for space exploration.
They need large amounts of fuel; they can explode and kill people
200
True or False
Gravity keeps the planets in orbit around the Sun.
True
300
The amount of matter in an object is called:
Mass
300
Gravity causes planets to do this in our solar system.
Orbit the Sun
300
This type of space technology allows astronauts to live in space for longer periods of time.
The International Space Station (ISS)
300
Name one advantage and one disadvantage of using space shuttles to explore space.
Advantage: Carries people into space
Disadvantage: Expensive to build and fix; needs to carry enough supplies; Can lead to death/injury of astronauts
300
True or False
Mass and weight are the same thing.
False (Mass is the amount of matter in an object; Weight is the amount of force acting on an object in a gravitational field)
400
This is what we call the circular path of an object around a larger object (ex. Earth & Moon)
Orbit
400
Which planet would you weigh the most on? Why?
You would weigh the most on Jupiter because it is the largest planet and has the most gravity of all the planets.
400
This type of space technology is powerful enough to work against gravity and take objects into space.
A Rocket
400
What is the difference between manned space missions and unmanned space missions?
Manned space missions use people while unmanned space missions do not use people, they use robots instead.
400
True or False
An astronaut would weigh less on the moon.
True (An astronaut would weigh less on the moon because its gravitational field strength is less than that of Earth - an astronaut would weigh 1/6 of what he/she would weigh on Earth)
500
This is what we call an object that orbits a planet or other large object in space.
Satellite
500
What is the weight of an object with a mass of 10 kg found on a planet with a gravitational field strength of 18 N/kg?
180 N
500
This type of space exploration technology uses robotic vehicles to move across the surface of a planet.
A Rover
500
Which type of space mission (manned or unmanned) allows us to learn more about the outer planets and other objects in our solar system?
Unmanned space missions
500
True or False
Gravitational pull depends on mass and distance.
True (The closer you are, the stronger the pull of gravity; the larger the object, the more gravity it will have)