Category 1 questions follow

Questio

nA temperature inversion occurs when the

upper layers of air are

a. Warmer

b. Cooler

c. radioactive

10Category 1

Answ

er

. A temperature inversion occurs

when the upper layers of air are

a. Warmer and pollution

accumulates under the “lid”

b. Cooler

c. radioactive

10Category 1

Questio

nWhich is not true about heat?

a. Higher temperatures have shorter wavelengths

b. Hot things cool faster in a black pot than a white pot

c. When heat is added to boiling water, its temperature

does not change

d. A cup of coffee has more internal energy than an

iceberg.

20Category 1

Answ

er

Which is not true about heat?

a. Higher temperatures have shorter wavelengths

b. Hot things cool faster in a black pot than a white

pot

c. When heat is added to boiling water, its

temperature does not change

d. A cup of coffee has more less internal energy than

an iceberg.{but the coffee does have a higher temp.

20Category 1

Questio

nWhich is not true about buoyancy?

a. An object is buoyed by a force equal to the weight of liquid

displaced

b. A 1 ton elephant that floats displaces 1 ton of water

c. Objects floating in air are buoyed up with a force equal to the

weight of air it displaces.

d. When ice in a glass melts, the water level will rise

30Category 1

Answ

er

Which is not true about buoyancy?

a. An object is buoyed by a force equal to the weight of

liquid displaced

b. A 1 ton elephant that floats displaces 1 ton of water

c. Objects floating in air are buoyed up with a force

equal to the weight of air it displaces.

d. When ice in a glass melts, the water level will rise will

remain at the same level

30Category 1

Questio

nWhich is NOT true about black holes?

A. A black hole is the remains of a giant star that has collapsed.

B. When a sun collapses to a black hole, the gravity on an

orbiting object would remain the same and the orbiting time

would stay the same.

C. If the mass of the earth increased with no change in radius,

your weight would remain the same

D. The greater the mass, the greater the gravitational attraction

40Category 1

Answ

er

Which is NOT true about black holes?

A. A black hole is the remains of a giant star that has collapsed.

B. When a sun collapses to a black hole, the gravity on an

orbiting object would remain the same and the orbiting time

would stay the same.

C. If the mass of the earth increased with no change in radius,

your weight would remain the same also increase

D. The greater the mass, the greater the gravitational

attraction.

40Category 1

Questio

nWhich NOT true about sound?

a. It is a longitudinal wave

b. It travels faster in solids, then liquids and finally air.

c. Radio waves can travel through a vacuum

d. Sound waves can travel through a vacuum.

50Category 1

Answ

er

Which NOT true about sound?

a. It is a longitudinal wave

b. It travels faster in solids, then liquids and finally air.

c. Radio waves can travel through a vacuum (It’s an E-M wave

d. Sound waves can NOT travel through a vaccuum. So if a tree fell in

a forest in a vacuum, you would not hear the sound of it falling.

50Category 1

Questio

nWhich is NOT true about radiation?

a. Gamma rays have no electric charge

b. Uranium breaks down to become lead

c. A nuclear reactor is controlled by control rods which

absorb neutrons

d. Non-Ionizing radiation is dangerous because it makes

other things radioactive

10Category 2

Answ

er

Which is NOT true about radiation?

a. Gamma rays have no electric charge

b. Uranium breaks down to become lead

c. A nuclear reactor is controlled by control rods which

absorb neutrons

d. Non-Ionizing IONIZING radiation is dangerous because

it makes other things radioactive

10Category 2

Questio

nWhich is NOT true about light?

a. Light bends when it is nears an object with a large

mass or gravitational field

b. Light moves along a path of least time

c. The brightest color is yellow-green

d. Most of the E-M spectrum is visible.

e. Cones in the eye provide color vision

f. All E-M waves have the same speed

20

Answ

er

Which is NOT true about light?

a. Light bends when it is nears an object with a large mass or

gravitational field

b. Light moves along a path of least time

c. The brightest color is yellow-green

d. Most of the E-M spectrum is visible. invisible

e. Cones in the eye provide color vision

f. All E-M waves have the same speed

20Category 2

Questio

n.Which is NOT true about current?

a. The wire which carries a current is charged.

b. The source of electrons in an electrical circuit is the circuit itself

c. An electric diode changes AC to DC

d. Lamps connected in a parallel circuit have less resistance than

individually.

30Category 2

Answ

er

Which is NOT true about current?

a. A wire which carries a current is NOT charged.

b. The source of electrons in an electrical circuit is the circuit

itself

c. An electric diode changes AC to DC

d. Lamps connected in a parallel circuit have less resistance

than individually.

30Category 2

Questio

nWhich not true about electromagnetism?

a. A magnet thrust into a coil of wire will have a current and becomes

an electromagnet

b. An electric motor is similar to an electric generator

c. An iron rod becomes magnetic when the net spins of its electrons are

in the same direction

d. DC power is used instead of AC in long distance power lines because

its voltage can be easily converted by transformers.

40Category 2

Answ

er

Which not true about electromagnetism?

a. A magnet thrust into a coil of wire will have a current and becomes

an electromagnet

b. An electric motor is similar to an electric generator

c. An iron rod becomes magnetic when the net spins of its electrons

are in the same direction

d. DC AC power is used instead of AC DC in long distance power lines

because its voltage can be easily converted by transformers.

40Category 2

Questio

nWhich is true about waves?

a. A wave is a wiggle in time

b. A Transverse waves motion is in the direction of wave

travel

c. A Longitudinal waves motion is at right angles to the

direction of wave travel

d. A node is a position of minimum amplitude

50Category 2

Answ

er

Which is true about waves?

a. A wave Vibration is a wiggle in time

b. A Transverse Longitudinal waves motion is in the

direction of wave travel

c. A Longitudinal Transverse waves motion is at right

angles to the direction of wave travel

d. A node is a position of minimum amplitude

50Category 2

Questio

nWhich is true about motion/waves?

a. Bow waves are produced when a boat moves slower

than the wave.

b. If a child stands on a swing, the time of the swing is

shortened.

c. If no external forces act on a moving object it will

move slower until it stops

10Category 3

Answ

er

Which is true about motion/waves?

a. Bow waves are produced when a boat moves slower

faster than the wave.

b. If a child stands on a swing, the time of the swing is

shortened.

c. If no external forces act on a moving object it will move

slower until it stops in a straight line, with the same

velocity

10Category 3

Questio

nWhich is true?

a. Bullets fired toward the rear of a plane would cause the

planes momentum to decrease.

b. You want a cannon with a large mass compared to its

missile, or the target would be safer than the shooter.

c. If a cannon has a longer barrel, its velocity would

decrease.

20Category 3

Answ

er

Which is true?

a. Bullets fired toward the rear of a plane would

cause the planes momentum to increase decrease.

b. You want a cannon with a large mass compared to

its missile, or the target would be safer than the

shooter.

c. If a cannon has a longer barrel, its velocity would

decrease increase. (you really need more details)

20Category 3

Questio

nWhich is true about circular motion?

a. A twirling skater who moves her arms outward,

slows down.

b. If you are trying to balance an object which is

heavy on one end, it is easier if the heavy end is

down

30Category 3

Answ

er

Which is true about circular motion?

a. A twirling skater who moves her arms outward,

slows down.

b. If you are trying to balance an object which is heavy

on one end, it is easier if the heavy end is up down

30Category 3

Questio

nWhich is not true about mass?

a. If the mass of an object doubles, its gravitational force

is doubled

b. Mass does not change, regardless of where you are

c. A mass of 20 kg has a weight of about 200 N

d. If the moon has a gravitational attraction of 4000 N on

the sun, the suns force on it is less.

40Category 3

Answ

er

Which is not true about mass?

a. If the mass of an object doubles, its gravitational force is

doubled

b. Mass does not change, regardless of where you are

c. A mass of 20 kg has a weight of about 200 N (F = ma)

d. If the moon has a gravitational attraction of 4000 N on

the sun, the suns force on it is less. The same= 4000 N

40Category 3

Questio

nWhich is not true about projectiles?

a. It takes the same amount of time to go up as it

takes to fall

b. If it takes 1 second to reach the top, it was thrown

up at 10 m/s

c. At the top of its path, the acceleration is 0

50Category 3

Answ

er

Which is not true about projectiles?

a. It takes the same amount of time to go up as it takes to fall

b. If it takes 1 second to reach the top, it was thrown up at 10

m/s (V = gt or 10 m/s = (10 m/s2) ( 1 sec)

c. At the top of its path, the acceleration is 9.8 m/s2, NOT 0

50Category 3

Questio

nWhich is not true?

A. sparkler will burn you because little energy is transferred

because few molecules are transferred.

B. Chinook winds are produced by increased pressure of

winds moving down a mountain which can warm an

environment.

C. Facts may change, but a scientist who reports false

information gets no second chance.

10Category 4

Answ

er

Which is not true?

A. sparkler will NOT burn you because little energy is

transferred because few molecules are transferred.

B. Chinook winds are produced by increased pressure of

winds moving down a mountain which can warm an

environment.

C. Facts may change, but a scientist who reports false

information gets no second chance.

10Category 4

Questio

nWhich is NOT true?a. We are warmed by condensation because water

molecules in the air that strike our bodies transfer some of the kinetic energy to us.

b. Evaporation is a warming process where the most energetic particles escape

20Category 4

Answ

er

Which is NOT true?a. We are warmed by condensation because water

molecules in the air that strike our bodies transfer some of the kinetic energy to us.

b. Evaporation is a cooling warming process where the most energetic particles escape

20Category 4

Questio

nWhy is time so important to someone who is falling?

a. Because you speed up

b. You fall farther in each second, the longer you fall

c. Terminal velocity means that the time it takes you

to fall does not matter

d. A and b are correct

30Category 4

Answ

er

Why is time so important to someone who is falling?

a. Because you speed up as you fall (v = gt)

b. You fall farther in each second, the longer you fall

c. Terminal velocity means that the time it takes you

to fall does not matter

d. A and b are correct

30Category 4

Questio

nWhich is NOT true?

a. Plasmas can conduct current, but gases can’t

b. The faster a fluid moves, the lower the internal

pressure

c. A 5 kg bag of large apples will need more caramel to

coat them than a 5 kg bag of small potatoes

40Category 4

Answ

er

Which is NOT true?

a. Plasmas can conduct current, but gases can’t

b. The faster a fluid moves, the lower the internal pressure

c. A 5 kg bag of small large apples will need more caramel

to coat them than a 5 kg bag of large small potatoes

40Category 4

Questio

nWhat is the primary purpose of a lightning rod?

50Category 4

Answ

er

What is the primary

purpose of a lightning

rod?discharge the structure to which it is attached.

50Category 4

Questio

nA woman carries a heavy box across a room at a constant speed. How much work does she do on the box while walking?

10Category 5

Answ

er

A woman carries a heavy box across a room at a constant speed. How much work does she do on the box while walking?

a. none

10Category 5

Questio

nWhat force binds atoms together to form molecules?

a. Gravity

b. electrical

20Category 5

Answ

er

What force binds atoms

together to form

molecules?

a. Gravity

b. electrical

20Category 5

Questio

nA skydiver jumps from a high-flying plane. As her velocity of fall increases, her acceleration

a. Increase

b. Decrease

c. Remains unchanged

30Category 5

Answ

er

A skydiver jumps from a high-flying plane. As her velocity of fall increases, her acceleration

a. Increase

b. Decrease

c. Remains unchanged

30Category 5

Questio

nStrictly speaking, to weigh less in the Northern Hemisphere, you should move to a location further

a. North toward the north pole

b. South to the south pole

c. Toward the equator

40Category 5

Answ

er

Strictly speaking, to weigh less in the Northern Hemisphere, you should move to a location further

a. North toward the north pole

b. South to the south pole

c. Toward the equator- it spins the fastest there

and you would weigh less

40Category 5

Questio

nWhich is NOT true?

a. A strong gravitational field will slow a clock

b. The stretching of time due to motion is called time dilation

c. The Chaos theory involves small differences which lead to

large eventual differences

d. If a space ship landed on a large planet made of antimatter,

both the ship and planet would be annihilated.

50Category 5

Answ

er

Which is NOT true?

a. A strong gravitational field will slow a clock

b. The stretching of time due to motion is called time dilation

c. The Chaos theory involves small differences which lead to large

eventual differences

d. If a space ship landed on a large planet made of antimatter, both the

ship and planet would be annihilated, the astronaut and an equal

amount of the planet would both be annihilated.

50Category 5

category 1

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