Physical Science Semester Review

In class we said Star Wars is not realistic. Why, in terms of waves, is Star Wars not realistic?

• Light cannot travel in a vacuum

• Sound cannot travel in a vacuum

• Nothing can travel in a vacuum

• none of the above

A ray of light will reflect at the same angle it hits a surface. What is the name of this law?

• The Law of Reflection

• The Law of Diffraction

• The Law of Refraction

• The Law of Longitudinal Waves

Tags

NGSS.MS-PS4-2

What is the equation for density?

• D=V/m

• F=ma

• D=m/V

Matter is broken down into two categories. What are these two categories?

• Substances and Mixtures

• Element and Mixtures

• Elements and Substances

• Elements and Compounds

How do we know if a property is a physical property?

• If the atoms are rearranged

• Gasses are released from it

• The color and Temperature change rapidly

• If we can observe it with our senses without changing the substance

Heating an object causes the kinetic energy of its particles to _____________.

• remain constant

• increase

• decrease

• none of the above

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which state of matter is responsible for the Northern Lights?

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS4-1

The atomic number is determined by the ____________.

• neutron number

• electron number

• proton number

• mass number

What is the mass listed on the periodic table called?

• mass number

• weighted average atomic mass

• proton & neutron mass

• none of the above

What charge does an atom have when its electron number equals its proton number?

• positive

• negative

• neutral

• none of the above