Forces Topic Flashcards
What is Gravity?
It is a force of attraction.
Is Gravity a force of attraction
True or False?
True
What are three ways in which a force changes an object .
Push, Pull , Twist.
The unit used to measure force is called The ……
The Newton.
Remember symbol N.
What do Arrows represent?
Arrows represent the force and the reaction force in a situation.
e.g -the bigger arrow ,the bigger force.
What is the definition of Inertia?
It means to resist change in motion.
Eg :if you left your school bag in your room ,it would stay there until something happened to it ,this ability is called Inertia.
A force can Be measured using a ……..balance?
A spring balance.
All around us things move or are in ……?
Motion.
Whenever there is a change in motion, a …… Has acted?
A force.
What is the difference between acceleration and deceleration?
Acceleration means speeding up or getting faster.
Deceleration means losing speed or slowing down.
Multiple choice Mass is a measure of A - Gravity B- Weight C -How much friction is needed D- How much matter a object contains
Mass is a measure of how much matter a object contains
How is weight measured?
On a scale.
What is the difference between a temporary magnet and a permanent magnet?
One keeps a level of magnetism for a long time( permanent) and the other only keeps its magnetism when in a magnetic field( temporary)
Eg: A fridge door magnet is a permanent magnet
A paper clip is a temporary magnet remember these are a soft magnet.
What is lightning?
Lightning is a giant spark of electricity produced by a thunderstorm.
How does lightning work?
Hint: rain drops
Water droplets collide causing ion build up, positive charge at top of cloud negative charge at the bottom. Causing a discharge from positive to negative…..lightning bolt
What is the definition of Friction?
When two surfaces make contact and can slow objects down.
If you want to overcome inertia , you have to apply what?
Force.
Multiple choice: Which one of the features in a car is not a safety feature? A. Electronic Stability Control B. Seatbelt C.Steering Wheel D. Airbags
C. steering Wheel
Other safety’s could be :
Anti lock breaking system
Auto emergency braking
Traction control
What is lightning?
A. A Christmas light
B. A planet
C. A giant ring around the sun
D A giant spark of electricity
A giant spark of electricity.
What is Inertia? A - to resist change in motion. B - to apply force C - A car safety feature D- A satellite
To resist change in motion.
Multiple choice Weight is a measure of A- how strong gravity pulls on a object B- How strong gravity pulls on mass C- how strong gravity pulls on a force. D- How strong gravity is.
A - How strong gravity pulls on an object.
Definition of a force
Strength of physical action or movement
