Earth's place Flashcards
an imaginary line an object turns around.
axis
PM- afternoon- after 12 lunch time.
AM- morning time before noon- asleep and when you first get to school.
day/night(24 hours
the movement of an object in a circular motion.
rotation/rotates
a repeating path that one object in space takes around another.
orbit(position)
a dark shape made when an object blocks light. when you stand outside, your body blocks sunlight and that makes a shadow.
shadow
a circle of events that repeats in a regular pattern.
cycle
perfectly round and symmetrical like a ball.
sphere/spherical
the angle of the Earth’s axis. this causes seasons.
tilt
evidence, models, relationship, three dimensional, patterns
supporting vocabulary
the first phase of the moon. in this phase, the moon is completely dark since we can’t see the side that the sun is shining on.
new moon
the second phase of the moon. in this phase, we can see sunlight reflecting off only a
crescent moon
What is the third planet from the Sun?
Earth
True or False: Earth is the only planet known to support life.
True
Fill in the blank: Earth orbits the Sun in an elliptical shape, taking approximately _____ days to complete one orbit.
365.25
What is the Earth’s atmosphere primarily composed of?
Nitrogen and oxygen
Which layer of the Earth is liquid?
Outer core
What percentage of Earth’s surface is covered by water?
About 71%
What is the name of the force that keeps Earth in orbit around the Sun?
Gravity
True or False: Earth’s rotation is from east to west.
False
What is the term for Earth’s path around the Sun?
Orbit
Fill in the blank: The tilt of Earth’s axis is approximately _____ degrees.
23.5
What is the primary reason for the seasons on Earth?
The tilt of Earth’s axis
What celestial body is Earth’s only natural satellite?
The Moon
What is the average distance from Earth to the Sun?
About 93 million miles (150 million kilometers)
Which layer of the Earth is solid and includes the crust and upper mantle?
Lithosphere
What is the name of the phenomenon that causes day and night?
Earth’s rotation
True or False: Earth has a perfect circular orbit around the Sun.
False
What is the geological term for the movement of tectonic plates?
Plate tectonics
Which two planets are often considered Earth’s ‘sister planets’ due to their similar size and composition?
Venus and Mars
What is the term for the boundary between the Earth’s crust and mantle?
Mohorovičić discontinuity (Moho)
Fill in the blank: The Earth’s magnetic field is generated by movements in the _____ core.
Outer
What is the effect of the Earth’s rotation on the movement of air and water?
Coriolis effect
What are the two main types of Earth’s crust?
Continental crust and oceanic crust
True or False: Earth’s axis is perpendicular to its orbital plane.
False
What is the term used to describe the zone around the Earth where satellites orbit?
Low Earth Orbit (LEO)
What is the primary source of energy for Earth’s climate system?
The Sun
What is the term for the region of space where Earth’s gravity is dominant?
Earth’s gravitational field
Fill in the blank: The Earth’s rotation speed at the equator is approximately _____ kilometers per hour.
1670
