Distance vs Time
When graphing distance and time, which values are placed on the Y axis.
Distance
___________ is the sum of an object's kinetic energy and potential energy.
Mechanical Energy
__________________ states that all of the particles that make up matter are constantly in motion.
Kinetic theory of matter
In order for work to be done, ______________ must be applied and ______________ must occur.
force and motion
A man pushing a box is an example of what type of force.
Friction
What is the formula for calculating speed.
distance/time
Name two examples of electromagnetic energy
visible light, x-rays and microwaves
__________ is a measure of the average kinetic of all the particles in an object.
Temperature
______________ is a push or pull on an object that comes from the object's interaction.
Force
The slope of the distance-time graph is equal to?
the speed of the object.
A negative gradient or slope means?
the object is returning to the starting point/ slowing down
_________ is the energy that an object has due to motion of it's molecules.
Thermal energy
What is the difference between temperature and thermal energy?
Temperature is related to the average kinetic energy of particles, while thermal energy is the total kinetic energy of all particles.
What is the force between the earth and the sun?
Gravitational Force
Can solids undergo convection?
No, particles in a solid can not move freely
When the motion of a body is uniform, then the distance-time graph is ____________________
A straight line
Describe nuclear energy!
When an atom's nucleus breaks apart or when nuclei from two small atoms join together, energy is released.
Name one way heat is measured
Calorie or joule
Who came up with the three laws of motion?
Isaac Newton
A group of sheep are grazing in a field. As they eat, the sheep break down the molecules in the grass, which releases energy. What form of energy is stored in the the grass.
Chemical
The equator's circumference is estimated to be 40,075 km. How would you determine the speed that the earth spins?
distance 40,075 km divided by 24 hours.
1,670 Km per hour.
What type of energy does the sun provide?
Thermal and Light
Explain the difference between conduction and convection.
conduction is the transfer of energy as heat from one substance to another through direct contact. Convection is the transfer of energy as heat by the movement of liquid or gas.
Name three non-contact forces
Magnetic, gravitational, and electrostatic.
Jack throws a baseball into the air. It rises, stops momentarily when it reaches it's greatest height and then fall back to the ground. At what point does kinetic energy converts to potential energy?
When the ball is rising