Fall exam 8th grade

What is the charge of a proton in an atom?

• Negative

• positive

• Neutral

• None of the above

What is the atomic number of an atom of Carbon?

• 12

• 6

• 2

• 3

What is the charge of the subatomic particle electron?

• Negative

• positive

• Neutral

• All of the above

A car is driven for 3 hours. What else do you need to know to describe this car’s speed?

• the road the car in driven on.

• the time of day.

• the distance the car is driven.

• the number of passengers in the car.

Which information is needed to determine how fast a truck is traveling?

• direction and mass

• distance and time

• size and speed

• time and weight

What are the subatomic particles located in the nucleus of an atom?

• protons and electrons

• electrons and neutrons

• protons and neutrons

• ions and isotopes

What pulls a ball back to earth?

• Gas

• Friction

• Gravity

• Molecules

If you push a tennis ball, a bowling ball, and a basketball with the same amount of force, which one will go farthest?

• bowling ball

• basketball

• tennis ball

• None of the above

What is Newton's first law of motion?

• for every action, there is an equal and opposite reaction

• force = mass x acceleration

• an object in motion stays in motion unless acted upon by an unbalanced force

  an object at rest, stays at rest unless acted upon by an unbalanced force

• the force of gravity is caused by the Earth

What is a convergent boundary?

• an area on Earth where two or more lithospheric plates collide

• an area on Earth where two or more lithospheric plates pull apart

• An area on Earth where one lithospheric plates pull underneath another lithospheric plate

• All of the above