Why doesn't the Feather and the ball fall at the same time on Earth?
Because air resistance hold the feather movement
The strength of gravity on a planet is 5 N/kg. Calculate the weight of an 800 kg spacecraft on that planet.
4000 N
What is the name of the force holding us to the Earth?
Gravity
The amount of stuff that made something
Mass
[True or False] If you go to the Moon, your mass will be less than on Earth.
False
A television camera has a weight of 20 N on the Moon. Calculate its mass of the camera if the gravitational force on moon is 2 N/kg
10 kg
What effect does gravity have on the particles in a nebula?
It pulls them together
[True or False] The gravitational force on Earth is 10 N/kg
True
Name the Giant Gasses planets in order.
Jupiter, Saturn, Uranus, Neptune
[True or False] If you go to the Moon, your weight will be less than on Earth
True
[True or False] The gravitational force on moon is bigger than on Earth
False
What causes pressure inside a nebula?
particles bumping into each other
If the planets orbit the Sun, where do the Sun along with the entire solar system orbit?
Galaxy or Milky way Galaxy
[True or False] When the object from Earth move to Moon, the weight of the object will change
True
What is the formula introduced by Sir Isaac Newton to get the weight of an object?
W = m x g
Which two forces cause the gas and dust in nebulas to form solar systems?
Gravity and Pressure
Who discovered gravity?
Isaac Newton
solar nebula a rotating cloud of gas and dust from which the sun and planets formed. What happened to the solar nebula?
It became the solar system.
[True or False] When the object from Earth move to Moon, the mass of the object will change
False
How does high pressure probably affect the size of a nebula?
It makes the nebula expand, or get bigger.
The force exerted on the body by gravity.
Weight
What would happen without Gravity?
People (and everything else on Earth) could just float away into space.
The strength of gravity on a planet is 10 N/kg. Calculate the weight of a 900 kg airplane on Earth.
9000 N