Motion and Forces
What is Newton's First Law?
An object at rest will stay at rest until acted upon by an outside force.
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed, only tranformed or transfered.
What are all the colors of the rainbow?
ROYGBIV. Red, orange, yellow, green, blue, indigo, violet.
Who created the first periodic table of elements?
Demetri Mendeleev.
What is a catalyst?
Something that speeds up a reaction without changing the final project.
What is displacement?
How far an object has gone from point A to point B.
What is needed for work?
Force and motion in the same direction.
What is the Law of reflection?
The angle of incidence is equal to the angle of reflection.
What is physical weathering?
The breakdown of rock
What is the number written below the elements in a formula?
A subscript.
What is the difference between mass and weight?
Weight is the amount of gravity that acts on an object, mass is the amount of matter in an object.
What is the difference between nonrenewable energy and renewable energy?
Nonrenewable energy will eventually run out and renewable is naturally replaced and will last forever.
What is echolocation?
The finding of objects using the reflection of sounds.
what are two examples of a chemical change?
bubbling, dissolving, and change in temperature.
What is an endothermic reaction?
It is a reaction that absorbs heat.
What are the three types of friction?
Sliding friction, rolling friction, and static friction.
What is one of Micheal Faradays inventions?
Motor and or electricity generator.
Name all of the parts of a wave.
Trough, crest, wavelength, and amplitude.
What is a homogeneous mixture?
When you cant identify the parts of a mixture.
What is a double-displacement chemical reaction?
When the molecules both switch to the other molecule.
Why do astronauts float in outer space?
They are in a freefall constantly.
Name three out of the five effects of deforestation.
Habitat loss, desertification, increased greenhouse gases, soil erosion, and flooding
How do we see color?
White light is shined down from the sun and lands on objects that absorb every color and reflects the one you see.
What is a half-life?
The time it takes for half the material to decay.
Name three ways to speed up a reaction.
Temperature, surface area, volume, agitation, and pressure.