Contact or Non Contact Forces
Wind pushing a kite is what kind of force?
A contact force
-100
If you drop a golf ball and a bowling ball at the same time from the same height, what will hit the ground first?
They will hit the ground at the same time.
+100
True or False. Electrostatic forces are non contact forces.
True.
+100
Magnets can attract what kind of material?
Metal.
-100
Which material is naturally magnetic? a) Iron and Cobalt b)Wood and Plastic c) Rubber and Glass or d) Copper and Aluminum
Iron and Cobalt
+100
This type of force requires two objects to touch.
A contact force.
+200
How is gravity different on the Earth than on the moon?
Gravity on the moon is less because the moon is smaller and has a weaker gravitational pull.
+200
True or False. Electrostatic forces occur due to charged particles?
True.
+200
What are the two ends of a magnet called?
North Pole and South Pole.
-200
True or False. The magnetic field is visible. (ie you can see it)
False.
-200
What kind of force is used to pull open a door with your hand?
A contact force.
+300
True or False. Gravity still works on objects that are not touching?
True.
-300
When charged particles attract are they the same or opposite?
Opposite.
-300
What is the area called where the magnetic forces can be felt?
Magnetic Field.
-300
Which forces keeps objects on the ground?
Gravity.
-300
What kind of force causes your hair to stand up when going down a slide?
Non contact force.
-400
True or False. Gravity pulls the moon around the Earth?
True.
+400
What happens when you bring together 2 of the same charged particle?
They repel.
-400
When 2 North poles are near each other what happens?
They repel.
+400
What do we call a force that does not directly touch an object to move it?
Non contact force.
+400
An apple falls from a tree is subject to what kind of force?
A non contact force.
+500
True or False. Gravity is an example of a contact force.
False.
-500
True or False. An electric shock is when charged particles jump from one object to another.
True.
+500
What happens when opposite poles get close?
They attract.
-500
Is a paperclip naturally magnetic?
No.
-500