Forces
How are forces represented in diagrams?
With arrows
Is mass or weight dependent on gravity?
Weight
Is magnetism a contact or non-contact force?
non-contact
What forces are acting on a pen sitting on a table?
Gravitational and normal
Do greater masses have smaller or greater gravitational forces?
greater
Give an example of a permanent magnet
Bar magnet, horseshoe magnet, fridge magnets, compass needles
Name two types of forces
normal, applied, gravitational, magnetic, friction etc.
If you mass is 40kg on Earth, what is it on the moon?
40kg
What does a temporary magnet need to be magnetised?
An external force, an already existing magnetic field
What is a non-contact force?
A force between objects not in physical contact
Which scientist coined the theory of gravitational force?
Isaac Newton
Do unlike poles attract or repel?
Attract
What is an unbalanced force?
Forces that are NOT equal in size and do cause a change in motion
Does gravitational force strengthen or weaken when distance increases?
Weaken
In which direction do magnetic field lines travel?
From the north to the south pole
Is friction a contact or non-contact force?
Contact
What is are mass and weight measured in?
kilograms (kg) and newtons (N)
Give an example of animals using Earth's magnetic field for navigation
Birds navigating, Butterflies migrating