Motion
The speed and direction of a moving object is?
Velocity
When a roller coaster is at the top of a hill/ramp, what type of energy is it using?
What is an example of a simple machine?
pulley, wheel and axle, wedge, screw, lever etc.
True or False, you do work when you blow a bubble with chewing gum?
True
What reduces the efficiency of a machine?
Friction
How do you calculate speed?
Divide distance by time
Food gives us what type of energy?
Chemical
Give an example of a compound machine
bike, scissors, computer etc.
What is the use of force to move an object a certain distance?
work
What is an example of a wheel and axle?
Ceiling fan
What is the tendency of an object to remain in motion or to stay at rest unless acted upon by an outside force?
Inertia
A bomb is an example of what kind of energy?
Nuclear
Draw an example of a type one lever
effort load
fulcrum
What is a metric unit for weight, measuring an amount of force?
Newton
If two children the same weight sit on a see-saw, what do they create?
Balanced Forces
A car is traveling 60 miles per hour west, the part 60 miles per hour refers to the what?
speed
When a rollercoaster is moving down a hill or ramp, it is using what type of energy?
kinetic
Give a real example of a type two lever
stapler, wheel barrow, nail clippers etc.
A force between surfaces that slows object or stops them from moving is what?
Friction
What causes more friction a rough or smooth surface?
rough
Change in speed or direction is what?
Acceleration
What is the ability to do work?
Energy
Draw an example of a type three lever
Load effort
fulcrum
Why does a chef put oil in a frying pan when cooking onions?
To reduce friction so the onions do not stick to the pan! It also makes the pan a lot easier to clean :)
Why is light energy so important?
The sun, light, warmth, food for plants, oxygen for people! Helps us all survive!