Show:
Energy and Heat
Motion and Gravity
Electricity and Magnetism
Kinetic Theory and Solutions
Miscellaneous
100
What are the different kinds of potential energy?
Elastic potential, gravitational, and chemical.
100
Blood rushing from your head to your feet while quickly stopping when riding on a descending elevator.
What is an example of Newton's 1st Law of Motion?
100
An electric current flowing in one direction only.
What is direct current?
100
A saturated solution is one in which no more of the solute will dissolve at a specific temperature. An unsaturated solution is one in which more of the solute could dissolve at the same temperature. A supersaturated solution is when a solution which contains more solute than would normally dissolve at a certain temperature.
What is the difference between a saturated solution, a unsaturated solution, and a supersaturated solution?
100
Heat from a fire.
What is an example of radiation?
200
What are the different types of kinetic energy?
Rotational, translational, and vibrational.
200
Mike's car, which weighs 1,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.05 m/s/s. Using Newton's Second Law, you can compute how much force Mike is applying to the car.
What is an example of Newton's 2nd Law of Motion?
200
A flashlight.
What is an example of direct current?
200
What are the characteristics of acids?
Acids taste sour. Acids react strongly with metals, generally with the evolution of hydrogen gas (Eg: Zn + HCl). Strong Acids are dangerous and can burn your skin. Acids change litmus red. Acids become less acidic when mixed with bases. An acid has Ph scale of under 7. A substance that reduces the pH of a solution. A substance that produces hydrogen ions when dissolved in water
200
A pH of less than 7.
What is pH of acids?
300
Touching a stove and being burned.
What is an example of conduction?
300
If you throw a heavy ball or block away from your body, the force exerted will push back on you, possibly pushing you backward onto the ground.
What is an example of Newton's 3rd Law of Motion?
300
An electric current that reverses its direction many times a second at regular intervals, typically used in power supplies.
What is alternating current?
300
What are some examples of acids?
Lemon juice, soda, and vinegar.
300
A pH of more than 7.
What is the pH of bases?
400
Hot-air rising, cooling, and falling (convection currents.)
What is an example of convection?
400
What are balanced and unbalanced forces?
Balanced force: an equal force acting in opposite directions (in the end the total force acting on the body is 0). Unbalanced force: unequal forces acting on a body giving a net force of more than 0.
400
Room lights.
What is an example of alternating current?
400
What are the characteristics of bases?
Have a bitter taste, turn red litmus paper blue, and don't react with metals.
400
7.
What is neutral on the pH scale?
500
The emission of energy as electromagnetic waves or as moving subatomic particles.
What is radiation?
500
Which type of force causes an object to change its motion (balanced or unbalanced?)
Unbalanced.
500
What are the three ways static charges and/or discharges occur? What are examples of each?
When your hair stands up after you take off your jacket, when you walk across a carpet and touch a doorknob, and touching a Van de Graaff generator.
500
What are some examples of bases?
Ammonia, Draino, and baking soda.
500
0 to 14.
What is the range of the pH scale?