Space Outcome 3

What is the primary function of telescopes as described in the learning material?

• To study the chemical composition of distant stars

• To observe very distant objects in space

• To measure the temperature of planets

• To communicate with extraterrestrial beings

Who made one of the first practical uses of the telescope in 1608?

• Isaac Newton

• Johannes Kepler

• Galileo Galilei

• Hans Lippershey

What did Galileo Galilei observe about the moon with his telescope?

• It was perfectly smooth

• It had blemishes like mountains and craters

• It was a source of light

• It had rings like Saturn

What did the observation of sunspots by Galileo Galilei indicate about the sun?

• It was moving closer to Earth

• It was getting smaller

• It rotates on its axis

• It was cooling down

Who made one of the first practical uses of telescopes in 1608?

• Johannes Kepler

• Isaac Newton

• Galileo Galilei

• Hans Lippershey

What was one of the observations made by Galileo Galilei using the telescope?

• The Moon orbits the Earth

• Jupiter's moons orbit the planet

• The Sun orbits the Earth

• Earth is the center of the Universe

Why did planets appear disk-shaped to Galileo when using his telescope?

• Because they were very close to Earth

• Because they emitted their own light

• Because they were still pinpoints, but further away

• Because they were covered by clouds

Which model did Galileo's observations support?

• Ptolemy's Earth-centered model

• Kepler's elliptical orbit model

• Galileo's own model

• Copernicus's Sun-centered model

What did Galileo observe that indicated Earth was not the center of the universe?

• The phases of Venus

• Moons orbiting Jupiter

• The rotation of the Sun

• The orbit of Earth around the Sun

What is the primary function of lenses or mirrors in optical telescopes?

• To increase the weight of the telescope

• To collect and focus light from stars

• To magnify objects on Earth

• To generate light for better visibility in space