Push/Pull and Forces in Motion
What is a push and what is a pull?
Push-force that moves objects away from something
Pull-force that brings an object closer
What is gravity?
The force that pulls objects towards each other
What does attract and repel mean?
Attract means to pull something towards something else
Repel means to push something away from something else
What is direction?
The way something moves (left, right, up, or down)
Push-ups are an example of using muscular force
TRUE or FALSE
TRUE
What is a way to make a shopping cart start and stop moving?
Start: Walk forward and push
Stop: Pull and stop walking
What is friction?
The force that acts on objects that rub against each other
What is an example of static electricity?
-Lightning
-Shock
-Balloons and hair/sweater
-Clothes sticking together after the dryer
What is distance?
Amount of space between two things.
What is a muscular force?
The force created through the use of your muscles.
Is mowing the lawn a push or a pull?
Push
What has a greater gravitational pull, the earth or the moon?
Why?
The earth, because it has more mass.
Two north poles will attract each other
TRUE or FALSE
FALSE
Like poles repel each other
What is speed, and how could you change the speed a ball moves?
How fast or slow something moves
-kicking harder or softer
-inclined surface (hill)
-running start
What is an example of a force in nature?
Erosion
Landslide
Earthquakes
Volcanoes
You want to move two boxes.
a)More force is needed to move the lighter box
b)More force is needed to move the heavier box
b)More force is needed to move the heavier box
Is high friction rough or slippery?
Rough
Which of the following is not magnetic?
a)Iron
b)Copper
c)Nickel
d)Cobalt
e)Steel
b) Copper
What is the difference between contact force and non-contact force?
Contact force is created when objects touch and non-contact force is created without objects touching one another
What is an example of something humans have invented to protect us from forces and how does it keep you safe?
Seat belt
-protection for car accidents
-keeps you inside car
Helmet
-protects head from collisions or hits
Life vest
-keeps you floating
-prevents drowning
Three examples of pushes
-Swing
-Shopping cart
-Kicking a ball
-Pushing a button
Is wearing socks on tile floor high or low friction?
Low friction, it is slippery
The coin, a nickel, is magnetic
TRUE or FALSE
False, it is mostly made of copper
Kate users a magnet to pull a paper clip towards her.
CONTACT or NON-CONTACT
Why?
Non-contact
The magnet did not touch the paperclip to move it
What is a landslide and what other force that we have learned causes it?
When a large amount of earth, rock, and mud move down a steep slope due to the force of gravity.