Physical Science Semester 1 Review: Physics

Lab Basics

100

How many times should you move the decimal when converting from millimeters to hectometers?

5 times to the left

200

If the independent variable is what is being changed, what is the dependent variable?

What is being measured

300

What is the equation to convert a temperature into Kelvin?

K= C+273

400

What is 85,476 in scientific notation?

8.5476 x 10⁴

500

How many yards is 6,000 centimeters?

65.6 yards

Motion, Forces, & Gravity

100

If my acceleration graph is a straight line above zero, what does that mean?

Acceleration is constant

200

If I have a 10kg box and push it 2m/s to the left, what is the momentum of the box?

20 kgm/s

300

If my mass is 100kg on Saturn, what would it be on Earth?

100kg

400

Define all of Newton's laws in order.

1st: An object in motion stays in motion

2nd: F=ma

3rd: Equal and opposite forces

500

How long did it take Steve to go 50 meters if he was running at 10 m/s?

5 seconds

Energy

100

Define Chemical Energy

food or fuel

200

Terry calculated that a 5 kg box going 2 m/s would have a kinetic energy of 5 J. What did they do wrong?

KE=1/2 * m * v²

They forgot to square velocity

300

What type of heat transfer occurs in a lava lamp?

Convection

400

Rowley picks his favorite book up from the floor. Does he do any work? Explain why.

W=F*d

No, there is no force being applied to the book

500

A 80kg student sledding down the hill has 15,000 J of kinetic energy. How tall is the hill?

19.1 meters tall

E&M

100

What two kinds of poles on a magnet will repel each other?

North and North

or

South and South

200

When removing one lightbulb, the other one stays on. What type of circuit is this?

Parallel circuit

300

Do negative charges or positive charges move? Explain.

Negative charges move because they are on the outside of the atom

400

In a circuit with 18v and a resistance of 6 ohms, find the current.

I=V/R

3 amps

500

WILDCARD!

What is the value of g?

g=9.8 m/s²

Waves

100

What are the ups and downs of a wave called?

Crests & Troughs

200

What is the speed of sound?

340 m/s

300

A fundamental frequency is 6 Hz. What harmonic would 36 Hz be?

6th Harmonic

400

If a sound is 50 dB, how many decibels would be half as loud?

40 dB

500

If a wave has a frequency of 5 Hz and a wavelength of 100 m, what is the velocity?

500 m/s