Explorers During the Age of Exploration

What did explorers during the age of exploration think would happen when a boat sailed past the horizon?

• The boat would fall off the edge of the Earth.

• The boat would reach a new continent.

• The boat would disappear into the sky.

• The boat would circle back to its starting point.

What do you think is happening in this picture? A group of students is gathered around a large table filled with sand and water, possibly simulating a river or erosion process.

• A cooking class

• A science experiment on erosion

• A sports event

• A music rehearsal

Laboratory models are used to simulate _______ events.

• artificial

• natural

• historical

• fictional

Mental models represent _______ or images of something in your mind.

• sounds

• colors

• ideas

• numbers

What shape is the Earth?

• A perfect sphere

• An oblate spheroid

• A cube

• A flat disc

What shape is the Earth most accurately described as?

• Perfect sphere

• Oblate spheroid

• Flat disc

• Cube

What evidence is there to prove that the Earth is roundish spherical shape?

• Photos from outer space taken by satellite

• As ships would sail further into the horizon, gradually the ship would disappear but their top part of the ship would disappear last. Then the top part of the ship would appear first coming from the horizon

• Shadows cast by the Earth during a lunar eclipse

• The way the stars change position as you move north or south

What shape is the Earth's shadow during a lunar eclipse?

• Square

• Curved, cone-shaped

• Triangular

• Flat

Which star is known as the North Star?

• Sirius

• Betelgeuse

• Polaris

• Vega

What happens to the North Star as you move towards the North Pole?

• It disappears

• It seems dimmer

• It appears lower in the sky

• It seems brighter and appears higher in the sky