Science, Matter, Energy, and Systems

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

Tags

NGSS.MS-PS2-2

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

What is a statement that describes what scientists expect to happen every time under a particular set of conditions?

For example: what we know about gravity

• Communicating

• Scientific Inquiry

• Scientific Theory

• Scientific Law

Tags

NGSS.HS-PS2-1

What is a well-tested explanation for a wide range of observations or experimental results?

For example: what we know about the atom

• Scientific Theory

• Scientific Law

• Communicating

• Operational Definition

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-4

What is the difference between an element and a compound?

• An element is ONE type of atom; a compound is TWO OR MORE
• A compound is one type of atom; an element is TWO OR MORE

Tags

NGSS.MS-PS1-1

Which two subatomic particles are in the nucleus of an atom?

• Protons & Electrons
• Protons & Neutrons
• Electrons & Neutrons

Tags

NGSS.HS-PS1-8

What is the overall charge of an atom? 

• positive
• negative
• atomic
• neutral

What quantities vary between isotopes of an element?

• protons, electrons, and atomic mass
• protons, electrons, and atomic number
• neutrons and electrons
• neutrons and atomic mass

What is an ion?

• A Charged Atom
• A Large Atom
• A Small Atom
• A Cute Atom

Tags

NGSS.MS-PS1-1