Estimate the angular resolution of the human eye.

Estimate the angular resolution of the human eye.

A) 0.5 degrees
B) 1.0 degrees
C) 1.5 degrees
D) 2.0 degrees
E) 0.004 degrees

Answer: E

Hydrostatic equilibrium in our Sun is the balance between:

Hydrostatic equilibrium in our Sun is the balance between:

A) Convection and radiation
B) Convection and gravitation
C) Pressure and radiation
D) Radiation and gravitation
E) Gravitation and pressure

Answer: E

By what mechanism does solar energy reach the Sun's photosphere from the layer just underneath it?

By what mechanism does solar energy reach the Sun's photosphere from the layer just underneath it?

A) Differentiation
B) ionization
C) Radiation
D) Convection
E) Conduction

Answer: D

The body which wiped out the dinosaurs was about:

The body which wiped out the dinosaurs was about:

A) As big as out Moon
B) As big as one of Mars' moons
C) A few hundred meters across
D) As big as a 747
E) As big as an SUV

Answer: B

Meteor shower debris is believed to come from:

Meteor shower debris is believed to come from:

A) The asteroid belt when Mars deflects it toward us annually
B) The core of a differentiated type M asteroid, now broken up
C) The crust of a differentiated type C asteroid, now broken up
D) The disintegration of a short period comet over many returns to the Sun
E) Deep space, far beyond the solar system, defected by the gravity of another star

Answer: D

Long period comets are thought to reside mainly in the:

Long period comets are thought to reside mainly in the:

A) Asteroid belt
B) Kirkwood gaps
C) Kuiper belt
D) Oort cloud
E) Interstellar medium

Answer: D