Technology Adavances and Stars Review

The four largest moons of Jupiter were first seen in the early 1600s because

• Constantine created the space probe

• the space station was launched

• Galileo invented the first telescope

• satellites were launched

Over the years, scientists made new discoveries about objects that are far away from Earth by

• building larger telescopes

• launching satellites

• building a space station

• launching a space probe

The United States has landed a device on Mars. Using this device, we now know

• there are aliens

• what the soil is like on Mars

• that there is water on Mars

• Mars is made of gas

A group of astronomers are studying objects that are very distant from our solar system. They need a

• large telescope

• astronauts to go study them

• space probe launched

• device to gather data from farther away than other devices.

A radio telescope can detect radio waves from stars. Because it does not depend on visible light, it can be used during the day when the Sun is shining. This is an advantage over other telescopes because

• it is bigger

• it can go further distances

• can be used for a longer time each day

• it creates sound waves

Two stars that are the same size might appear to be different sizes when we observe them. This is because

• one star is farther from Earth than the other.

• one is brighter

• they are not the same size

How far from one point to another point is

• telescope

• space probe

• size

• distance

Based on the picture below, if students sit on other size of the room from the two flashlights,

• the first one would be brighter

• they will show the same brightness

• the second one would be brighter

Based on the table below, star B appears closer to us because

• it is farther and larger

• it is closer and larger

• it is farther and smaller

• it is the smallest

The technology of astronomy has advanced since simple telescopes because

• we have better telescopes now

• astronauts have gone into space

• the first telescope was invented

• stars have become brighter