Scientific Method
How many steps are there in the scientific method
6
How many laws of motion are there?
3
What are the two major sources of nonrenewable energy:
1.Fossil Fuels
2.Fissile Material
6
How many types of matter are there?
What are they?
4
Solid, Liquid, Gas, and Plasma
Quantitative and qualitative
What is the formula to find force?
Force=mass x acceleration
What are the five main types of alternative energy sources:
1.Sun
2.Wind
3.Moving Water
4.Geothermal Heat
5.Biomass
Lever, pulley, wheel and axle, wedge, inclined plane, and screw
Describe the shape and volume for a liquid
Indefinite shape but definite volume
A hypothesis must be ______
testable
How much mass does Mr. Dolores have (in Kg) if he is able to exert a force of 362 N while accelerating at a speed of 4 m/s?
Name 4 different forms of energy
1.Mechanical Energy
2.Light (Radiant) Energy
3.Electrical Energy
4.Sound Energy
5.Thermal Energy
6.Chemical Energy
2 or more simple machines that work together to perform a function
Compound Machine
Energy is not matter because it does not have ______ and ______
Mass and volume
A group of individuals are trying a new weight loss pill. Two groups were given identical looking pills, one being a placebo and the other being the new weight loss pill. Which group is the control, which is the experimental?
Control= placebo pills
Experimental= real weight loss pills
What is Newton's third law? Give an example
For every action there is an opposite and equal reaction
Eg. If you punch a wall, the wall exert the same amount of force back to your hand equal to how hard you punch
Explain the relationship between kinetic and potential energy.
–When potential energy is high, kinetic energy is low.
–When kinetic energy is high, potential energy is low.
•Work = Force × Distance
A man applies a force of 75 Newtons to move a box 0.25 meters. How much work did he perform?
17.5 J
What are important chemical properties of matter?
1.Reactivity
2.Corrosion (Oxidation and Tarnish)
3.Toxicity
4.Flammability
5.Combustibility
6.Radioactivity
Give an example of quantitative and qualitative data
Quantitative (uses numbers)= weight, height, IQ, time, temperature
Qualitative data (uses descriptions)= hair color, hair type, ethic makeup, location.....
Define inertia
An object in motion will stay in motion unless acted upon by an external force.
An object at rest will stay at rest unless acted upon by an external force.
Tommy does 200 Joules of work to push the pencil over 25 meter. How much force did he use?
Force=work/distance
200 J/25 m=
80NList the compound machines for the following items:
-Hand Drill
-Can opener
-Lawn Mower
Hand Drill= Screw, wedge, and wheel and axle
Can opener= Lever, wedge, and wheel and axle
Lawn Mower=Lever, wedge, and wheel and axle
List all 6 phase changes