Physical Science Final Exam Review

Metric Prefixes and Units

100

Acceleration is measured in units of ___.

m/s²

200

What is the ratio of the 10 mA current in a muscular contraction to the 1 mA current in a tingling sensation?

10:1

300

Jennifer obtains a meter stick from the lab and measures the width of her square desk to be 10 cm. What is the area of Cheryl's desk in cm² in scientific notation?

100 cm² 

or 1.00 x 10² cm²

400

What is the ratio of the value of the current measurement for Uranium to the value of the current measurement for Chalcolite?

Uranium = 2.3 x 10^-11 Amps

Chalcolite = 5.2 x 10^-11 Amps

1:2.26 

500

What is the unit for velocity?

m/s

The Analysis of Motion

100

Jennifer tosses a ball to Susie in Physical Science, just like we have been doing in class. What is the shape of the trajectory of the ball?

a parabola

200

What is Newton's First Law of Motion?

An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an unbalanced force. 

300

What is Newton's Second Law of Motion?

Force equals mass times acceleration.  

F=ma

400

What is Newton's Third Law of Motion?

For every action there is an equal and opposite reaction. 

500

What is the difference between a vector and a scalar?

A vector has magnitude(size) and direction but a scalar only has magnitude(size)

Friction and Momentum

100

Sliding friction between objects that are moving past each other can be increased by putting ___ between the objects. 

a. sand

b. oil

c. ice

d. wax

a. sand

200

Consider two skiers skiing down a ski slope. The mass of the first skier is 30 kg, and the mass of the second skier is 60 kg. Is the force of friction experienced by the first skier greater than, less than, or equal to the force of friction experienced by the second skier?

Less than

300

Two objects experience a 25 N gravitational force. If the mass of one of the objects is increased by a factor of two, determine the new gravitational force. 

gets cut in half, decreases by a factor of 2

400

Two objects experience a 5000 N gravitational force. If the distance between the two objects is increased by a factor of 10, determine the new gravitational force. 

The force will increase by a factor of 100

500

A tennis ball with a mass of 2.0 kg is traveling with a velocity of 3.5 m/s eastward. What is the momentum of the tennis ball?

7 kg*m/s² 

Energy and Matter

100

Energy is a (scalar or vector) quantity.

scalar

200

Energy is measured in units of ______. 

Joules

300

A tennis ball with a mass of 10.1 kg is traveling with a velocity of 2.2 m/s Northward. What is the kinetic energy of the tennis ball?

24.4 J

400

Carbon Dioxide, CO₂ is classified by which of the following:

atom, element, molecule, compound, mixture

compound

500

Neon gas, Ne is classified as which of the following: 

atom, element, molecule, compound, mixture

atom, element

Chemical Reactions

100

What is a chemical reaction?

a process in which one or more substances are converted to one or more different substances

200

The number of particles in one mole is ___. 

6.022 x 10²³

300

The number of particles in mole is known as ______ number. 

Avogadro's 

400

Who discovered radioactivity?

Henri Becquerel

500

What is the name of the experiment that Ernest Rutherford did that allowed him to discover the nucleus of an atom of one of the elements?

Gold Foil Experiment