How Can We Use the Stars to Navigate? Lessons#1-3

Front

What is the horizon?

Back

The line that separates the Earth from the sky.

Front

What shape is the Earth?

Back

The Earth is a spherical shape.

Front

What evidence supports the claim that the Earth is spherical?

Back

Videos and pictures show the bottoms of ships disappearing at the horizon.

Front

Why do shadows occur on Earth?

Back

Shadows occur because the sun hits almost all locations on Earth at an angle, causing vertical objects to cast a shadow.

Front

What is the Prime Meridian?

Back

The imaginary line of longitude located at 0 degrees that divides the Earth into the Eastern and Western hemispheres.

Front

What is the Equator?

Back

The imaginary line at 0 degrees latitude that divides the Earth into the Northern and Southern hemispheres.

Front

What are lines of latitude?

Back

Imaginary lines that run parallel to the Equator and measure distance north or south of it.

Front

What are lines of longitude?

Back

Imaginary lines that run from the North Pole to the South Pole and measure distance east or west of the Prime Meridian.

Front

How can latitude and longitude be used?

Back

They can be used to find locations and navigate the Earth.

Front

What is a celestial navigation?

Back

A method of navigation that uses the positions of stars and other celestial bodies.