8th Grade Semester Exam

Front

F=ma represents

Back

Newton's 2nd law

Front

"For every action, there is an equal and opposite reaction" represents

Back

Newton's 3rd law

Front

Earth is tilted at _____________ degrees.

Back

23.5

Front

Which of the following represents an element? H2O, HCl, NaCl, Au, CaCO3

Back

Au

Front

What type of galaxy is this? Spiral, Elliptical, Irregular, Irrational

Back

Spiral

Front

What is the formula for the Law of Conservation of Momentum?

Back

Total momentum before = Total momentum after

Front

What does the term 'mass' refer to in physics?

Back

The amount of matter in an object.

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N)

Front

What is the difference between speed and velocity?

Back

Speed is scalar; velocity is vector (includes direction).

Front

What is the formula for calculating kinetic energy?

Back

KE = 1/2 mv² (where m is mass and v is velocity).