Force and Motion
A student collected data about the force needed move a shopping cart. When cart the was empty it took 50 N (newtons) to move it. When the cart was full it took 100 N (newtons) to move it. What conclusion can you draw about shopping carts and mechanical energy?
More force is need to move a shopping cart as the mass increases.
What are two things you could do troubleshoot an electric circuit that is not working?
check the wires connection or
make sure circuit is closed or complete
What form of energy are present in a hot air balloon.
thermal energy
Mass is to weight as heat is to _____.
thermal energy
Students are testing three building designs during an earthquake.What might be the investigable question students are exploring?
What is the effect of the force of an earthquake on different buildings?
True or False
Friction is a type of force.
True
How can you make a light bulb shine brighter in a closed circuit?
Add another battery
What form of energy is also found in systems that produce sound energy?
electrical energy
Material that will allow electrical energy to pass through is called...?
a conductor
In an investigation, students are measuring the distance a toy car travels on different landing surfaces. What might be the investigable question they are exploring?
What effect does friction have on an object?
What unit of measurement is force measured in?
N-Newtons
A penny, aluminum foil and copper wire are all _______ of electrical energy.
conductors
What forms of energy are present when a student is using a mechanical pencil?
thermal, sound and mechanical
Energy created by vibrations is...
sound energy
True or false
An investigable question can be answered with yes or no.
false
Which surface would have less friction on roller skates, grass or a sidewalk?
sidewalk
What are the main components of a complete electric circuit?
battery (energy source)
wires (energy path)
light bulb (component to use energy)
True or False
Wood is a conductor of thermal energy
false
Energy in motion is referred to as...
mechanical energy
Every investigation must start with an ....
investigable question
How is force related to mechanical energy?
Force is the push or pull on an object which cause the object to produce movement or mechanical energy.
How would an open switch effect a light bulb circuit?
An open switch will stop the electric current from traveling through the circuit so the lightbulb will not light up.
What type of material for thermal energy will keep you food cold for a longer period of time?
an insulator of thermal energy such as styrofoam
The ability to reduce the speed or direction of a moving object is...
friction
In an investigation, students are taking the temperature of two containers that are full of ice every 5 minutes. What might be the investigable question they are exploring?
Which container is a better insulator for thermal energy?