Magnetism Rules: -points will be deducted for every wrong answer -No abbreviating -No arguing about points or 50 points will be deducted -Writing must be legible

Electrostatics

Current Electricity

Magnetism

Sound & Waves

Light & Optics

Thermodynamics & Nuclear

Electrostatics Current Electricity Magnetism Sound & Waves Light & Optics Thermodynamics & Nuclear

These materials have electrons that are tightly bound to the nucleus

What are insulators?

This law states that like charges repel and opposite charges attract.

What is the Law of Charges?

The space around every electrically charged body is filled with THIS.

What is an electric field?

This is what happens to the force when the distance between two charges is tripled.

The force is multiplied by 1/9

This is what happens to the force when the distance between 2 charges is doubled and 1 of the charges also doubles.

The force is cut in half.

This is the total resistance when a 12-ohm bulb and a 15-ohm bulb are connected in series with one another.

What is 25-ohms?

These add up in a series circuit

What are voltage AND resistance?

If you triple the voltage in a circuit with constant resistance, how will this change the current?

The current will increase by a factor of 3.

Four identical resistors are connected in series to a 12-volt battery. What is the voltage across any one of the resistors?

What is 3 Volts?

This is the total resistance of a 10-ohm, a 15-ohm, and a 30-ohm bulb connected in parallel.

What is 5 Ohms?

This is the region in which a magnetic force can be detected.

The magnetic field

Magnetic field lines around bar magnets are drawn with arrows pointing in this direction.

From North to South

This is the direction of the magnetic field around a current carrying wire traveling into the page.

What is clockwise?

This converts mechanical energy into electrical

What is a generator?

These are the 3 factors that contribute to the strength of an electromagnet.

What are: 1.Number of coilsNumber of coils 2.Amount of currentAmount of current 3.Iron coreIron core

A sound wave has these two classifications – it needs a medium and the medium vibrates parallel to the direction the wave travels

Mechanical and Longitudinal

This is the numerical range of frequencies that humans can hear.

What is 20 to 20,000 Hz?

Daily Double!

A wave moving at 50 m/s with a frequency of s has this wavelength.

What is 400 m?

These are the 4 phenomena common to all waves

Refraction, reflection, diffraction, interference

At 18 o C an echo is heard across a canyon 5 seconds later. This is the width of the canyon.

What is m?

This is the speed of light in a vaccuum.

What is 3 x 10 8 m/s?

This color has the lowest frequency.

What is red?

This type of lens ALWAYS produces a virtual image.

Concave lens

The human eye uses this type of lens to focus light onto the retina.

Convex lens

The image would be this far away if an object was placed 10 cm away from a concave mirror with a focal length of 5 cm

What is 10 cm?

A 3.0 cm wire carries a 4.0 A current. The wire is placed at right angles to a magnetic field of induction of.12 T. How much force acts on the wire? This is the amount of time for half of a radioactive isotope to undergo radioactive decay.

A 3.0 cm wire carries a 4.0 A current. The wire is placed at right angles to a magnetic field of induction of.12 T. How much force acts on the wire? Half life

These are the 3 ways in which heat can be transferred.

F=IlBsinθ Conduction Convection Radiation

These are the 3 types of radiation listed in order from most penetrating power to least

Gamma radiation Alpha particle Beta particle

238 U 92 changes into 234 Th 90 by emitting which type of radiation?

Alpha Particle

Daily Double!

A 100 g sample of substance ‘R’ has a half-life of 15 days. How much of the substance remains after 60 days?

F=ma F= 6.25 g

Final Jeopardy

Light

A diver shines a flashlight upward from beneath the water at a 39 degree angle to the vertical. At what angle does the light leave the water?

56.8 o