Forces and Motion
What is a force?
A push or pull
What is mass?
Amount of matter
What is friction?
A force that slows motion
What is a machine?
Makes work easier
What does a column do?
Holds weight up
What happens with balanced forces?
No movement
What is inertia?
Resistance to change in motion
Which surface has more friction: smooth or rough?
Rough
What simple machine is a ramp?
Inclined plane
What does an arch do?
Spreads weight
What happens with unbalanced forces?
Objects move or change motion
Which has more inertia: ant or horse?
Horse
What does a lubricant do?
Reduce friction
What simple machine is a seesaw?
Lever
What does a dome do?
Spreads weight in all directions
What is work in science?
When a force moves an object
Why do objects with more mass have more inertia?
Because they have more matter/ are larger
What happens to energy during a collision?
It transfers
What simple machine uses a rope and wheel?
Pulley
Which structure is most stable?
Pyramid