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What is water resistance?
A force that slows down objects moving through water
What is upthrust?
The upward force that pushes objects up in water
What does streamlined mean?
A smooth shape that allows objects to move easily through air or water with less resistance
What is friction?
A force that occurs when two surfaces rub against each other and slow movement
What is drag?
A force that slows down objects moving through a fluid such as air or water
What is air resistance?
A force that slows down objects moving through air
What is a space station?
A large artificial satellite where astronauts live and conduct research in space
What are orbital systems?
A system where one object moves around another due to gravity
What is the Moon’s orbit?
The path followed by the Moon as it travels around Earth
What is the Moon?
Earth’s natural satellite that orbits our planet
What is velocity?
The speed and direction an object moves in a particular direction
What is the pulling force that occurs between two objects with mass?
Gravitational force
What is the planet we live on that attracts objects toward its center?
Earth
What is the force that pulls objects with mass toward each other?
Gravity
What is a human made object placed into orbit around Earth or another planet?
Artificial satellite
Why does a bicycle slow down after you stop pedalling?
Because friction and air resistance slow it down when no applied force is pushing it forward
Can more than one force act on an object at the same time give an example?
Yes a book on a table has gravity pulling down and the normal force pushing up at the same time
If you push a box lightly and then harder what changes?
The box moves faster or farther because a stronger applied force is used
What would happen if there were no gravity?
Everything would float and nothing would stay on the ground
Why don’t we sink into the ground when we stand?
Because the ground pushes up on us with a normal force that balances gravity
If I kick a ball what force am I using?
Applied force
What force keeps a book from falling through a table?
Normal force
Is gravity a push or a pull?
Pull
What is a normal force?
The support force that pushes up from a surface to hold an object up
What is an applied force?
A push or pull given to an object by a person or another object
What is gravity?
A force that pulls objects down toward the Earth