Why Do We Study the Sun?

How can the sun's dynamic nature affect communication devices on Earth?

• By causing disruptions

• By improving signal strength

• By reducing interference

• By increasing data speed

How does NASA use satellites like SOHO?

• To predict earthquakes

• To study black holes

• To predict solar eruptions

• To monitor ocean currents

Why do we study the sun ?

• to help us learn about the formation and evolution of stars

• To get information about the structure and composition of galaxies

• To help us understand the processes that occur in different regions of the universe

• To enable comparisons between our solar system and other celestial bodies

Read this sentence from the passage.

“Our sun is very dynamic, and it changes constantly.”

What does the word dynamic mean as it is used in the sentence?

• active

• silly

• dark

• confusing

What is the ultimate source of energy for Earth?

• Wind

• Water

• Sun

• Moon

What force keeps our planet and other planets in the solar system in orbit?

• Magnetic force

• Gravitational force

• Electromagnetic force

• Centrifugal force

Read this paragraph from the passage.

“It has the largest eruptions in the solar system. These eruptions can be so large that

they can reach our planet and cause serious damage by disrupting satellites and other

communication devices.

What does the word eruptions mean as it is used in the paragraph?

• creatures

• planets

• orbits

• explosion

Read this sentence from the passage.

“The sun also has layers but unlike the Earth, the sun is entirely gaseous; there is no solid surface.”

How does the prefix un- change the meaning of the word unlike?

• It changes the meaning to “not like.”

• It changes the meaning to “fully like.”

• It changes the meaning to “like again.”

• It changes the meaning to “like before.”

How can the sun's dynamic nature affect communication devices on Earth?

• By causing disruptions

• By improving signal strength

• By reducing interference

• By increasing data speed

How can the sun's dynamic nature affect communication devices on Earth?

• By causing disruptions

• By improving signal strength

• By reducing interference

• By increasing data speed