Energy : Potential, Kinetic and Mechanical 6th grade

If the potential energy is 45 J (joules)and the kinetic energy is 50 J, what is the mechanical energy? 

• 5 J
• 45 J
• 50 J
• 95 J

The energy of motion.

• Potential Energy 
• Kineitc Energy 
• Mechanical energy 
• Transfer

Where  is the potential energy the greatest?
(enlarge the picture if needed)

• 1
• 2
• 3
• 4

A farmer applies different fertilizer to his cotton crops, to see which will make his plants grow the highest. What is the independent (test)  variable? 

• Growth of plants
• Height of plants.
• Type of fertilizer
• Different cotton crops

A scientific law stating that energy can’t be created or destroyed. It can only be transformed.

• Law of Conservation of matter.
• Law of Conservation of mass. 
• Law of Conservation of energy.
• Law of Conservation of momentum 

Stored energy

• Potential Energy 
• Kinetic Energy 
• Mechanical energy 
• Transfer

Energy an object has due to its position or height.

• Potential Energy 
• Kinetic  Energy 
• Mechanical energy 
• Transfer

The ​​group ​​in ​​the ​​experiment ​​used ​​as ​​a​​baseline​​​​ or for comparison.  This group receives no treatment. 

• outcome​​(dependent​​)​​variable
• test​​(independent)​​variable
• control 
• constant

The ​​variable ​​that ​​is ​​changed.​​​

• outcome​​(dependent​​)​​variable
• test​​(independent)​​variable
• control 
• constant

​​​​​The​​ variable ​​that ​​is ​​measured ​​for ​​change.​​

• outcome​​(dependent​​)​​variable
• test​​(independent)​​variable
• control 
• constant