Unit F- List A

Question 1

data

Answer 1

Information gathered from an experiment; firsthand evidence from the five 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 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 before and right after a new moon.

Question 6

equator

Answer 6

an imaginary circle that divides earth into two halves called the northern Hemisphere, and the 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 24 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 is visible from earth’s surface is a half circle.

Question 11

orbit

Answer 11

another term for revolution-a complete circle made by a planet around a sun or by a moon around a planet

Question 12

plausible

Answer 12

consistent with evidence.

Question 13

revolution

Answer 13

a complete circle made by a planet around a sun or by a moon around a planet (orbit)

Question 14

revolve

Answer 14

to travel around another object in a circular or elliptical path.

Question 15

rotate

Answer 15

to turn or spin around an axis.

Question 16

rotation

Answer 16

to turn or spin around an axis.

Question 17

lunar cycle

Answer 17

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

Question 18

time zone

Answer 18

a region throughout which the same standard time is used( There are 24 time zones in the world approximately by meridians at 15 degrees intervals, an hour apart.)

Question 19

hemisphere

Answer 19

One half of a sphere ( The half of earth that is north of the equator is the Northern hemisphere; The half of the Earth that is South of the equator is the Southern Hemisphere.)

Question 20

new moon

Answer 20

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

Question 21

waning

Answer 21

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

Question 22

waxing

Answer 22

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