Unit F - List A

Question 1

Data

Answer 1

Information gathered from an experiment; firsthand
evidence from the 5 senses or from machines that
extend our senses.

Question 2

Phenomenon

Answer 2

An event related to how the world and universe work.

Question 3

model

Answer 3

Any representation of a system, or its components, to

help one study and understand how it works.

Question 4

axis

Answer 4

The imaginary line around which an object spins, or
rotates. Earth rotates around an axis that runs straight
through the Earth from the North Pole to the South Pole.

Question 5

Crescent Moon

Answer 5

The phase of the moon in which the lit portion of the
Moon visible from Earth’s surface is less than a half-circle
(crescent shape). Crescent moons occur right after and
right before the new Moon.

Question 6

Equator

Answer 6

An imaginary circle that divides Earth into two halves
called the Northern hemisphere and Southern
Hemisphere.

Question 7

First-Quarter moon

Answer 7

The phase of the Moon, occurring about seven days
after the new Moon, in which the lighted portion of the
Moon that is visible from Earth’s surface is a half-circle.

Question 8

Full moon

Answer 8

The phase of the Moon that occurs about 14 days after
the new Moon in which the complete lighted portion of
the moon is visible from Earth’s surface & appears as a
full circle.

Question 9

Gibbous Moon

Answer 9

A phase of the Moon before or after it is full, when more

than half of its disk is illuminated.

Question 10

Last-Quarter Moon

Answer 10

The phase of the Moon that occurs about 7 days after
the full Moon in which the lighted portion of the Moon
that is visible from Earth’s surface is a half-circle.

Question 11

Lunar cycle

Answer 11

The revolution of the Moon around Earth that produces
the changing phases of the Moon. One complete lunar
cycle takes about 29.5 days.

Question 12

New Moon

Answer 12

The phase of the Moon, occurring about 14 days after the
full Moon, in which none of the lighted portion of the
Moon is visible from Earth’s surface.

Question 13

Orbit

Answer 13

Another term for revolution.

Question 14

Plausible

Answer 14

Consistent with evidence.

Question 15

Revolution

Answer 15

A complete circle made by a planet around a sun or a

moon around a planet (orbit)

Question 16

Revolve

Answer 16

To travel around another object in a circular or elliptical

path.

Question 17

Rotate, Rotation

Answer 17

To turn or spin around an axis.

Question 18

Waning

Answer 18

The phases of the Moon when the illuminated portion visible from Earth is decreasing (between the full and new Moon).

Question 19

Waxing

Answer 19

the phases of the moon when the illuminated portion visible from Earth is increasing (between the new full Moon)