Praxis II Middle School Science 5440
with Complete Solutions
What is the main function of the human circulatory system?
✔✔Transport oxygen and nutrients throughout the body
What is the basic unit of heredity in living organisms?
✔✔Gene
What is the change in velocity divided by the time taken called?
✔✔Acceleration
What is the term used for the amount of space an object occupies?
✔✔Volume
What is the term for the movement of energy through a food chain?
✔✔Energy flow
1
,What do we call the changing of a substance from a solid directly to a gas?
✔✔Sublimation
What is the process of breaking down food to release energy called?
✔✔Respiration
What is the part of the cell that controls its activities?
✔✔Nucleus
What is the name for an organism that makes its own food using sunlight?
✔✔Producer
What is the main component of the Earth's atmosphere?
✔✔Nitrogen
What is the name for the imaginary line around the Earth that divides it into the northern and
southern hemispheres?
✔✔Equator
2
,What is the term for the process by which living organisms change over generations?
✔✔Evolution
What is the name for the solid outer layer of the Earth?
✔✔Crust
What do we call an organism that feeds on other organisms for energy?
✔✔Consumer
What is the formula for calculating density?
✔✔Density = Mass ÷ Volume
What is the term for the outermost layer of the Sun's atmosphere?
✔✔Corona
What do we call the process where plants release water vapor into the atmosphere?
✔✔Transpiration
3
, What is the term for a substance that speeds up a chemical reaction without being consumed?
✔✔Catalyst
What is the SI unit for temperature?
✔✔Kelvin
What is the process by which the Earth orbits the Sun called?
✔✔Revolution
What is the name for a group of stars, dust, and gas bound together by gravity?
✔✔Galaxy
What is the term for the transfer of energy through electromagnetic waves?
✔✔Radiation
What is the unit of electrical resistance in the SI system?
✔✔Ohm
4
with Complete Solutions
What is the main function of the human circulatory system?
✔✔Transport oxygen and nutrients throughout the body
What is the basic unit of heredity in living organisms?
✔✔Gene
What is the change in velocity divided by the time taken called?
✔✔Acceleration
What is the term used for the amount of space an object occupies?
✔✔Volume
What is the term for the movement of energy through a food chain?
✔✔Energy flow
1
,What do we call the changing of a substance from a solid directly to a gas?
✔✔Sublimation
What is the process of breaking down food to release energy called?
✔✔Respiration
What is the part of the cell that controls its activities?
✔✔Nucleus
What is the name for an organism that makes its own food using sunlight?
✔✔Producer
What is the main component of the Earth's atmosphere?
✔✔Nitrogen
What is the name for the imaginary line around the Earth that divides it into the northern and
southern hemispheres?
✔✔Equator
2
,What is the term for the process by which living organisms change over generations?
✔✔Evolution
What is the name for the solid outer layer of the Earth?
✔✔Crust
What do we call an organism that feeds on other organisms for energy?
✔✔Consumer
What is the formula for calculating density?
✔✔Density = Mass ÷ Volume
What is the term for the outermost layer of the Sun's atmosphere?
✔✔Corona
What do we call the process where plants release water vapor into the atmosphere?
✔✔Transpiration
3
, What is the term for a substance that speeds up a chemical reaction without being consumed?
✔✔Catalyst
What is the SI unit for temperature?
✔✔Kelvin
What is the process by which the Earth orbits the Sun called?
✔✔Revolution
What is the name for a group of stars, dust, and gas bound together by gravity?
✔✔Galaxy
What is the term for the transfer of energy through electromagnetic waves?
✔✔Radiation
What is the unit of electrical resistance in the SI system?
✔✔Ohm
4
