A person who is trained to explore space is called a juggernaut., F astrounaut, Satellites can be used to take scientists to outer space., F spacecraft, Pluto lost its status as a planet; it is now considered a mini-planet., F dwarf planet, The moon phase is the shape of the Sun’s light on the moon's surface., T, Humans use the North Star constellation to give direction., T, Asteroids are giant space rocks that are too small to be planets but too big to be meteors., T, Because of its properties, the Sun is considered a planet., F star, A meteor is a snowball that moves around the Sun and melts, forming a tail., F comet, The Earth needs approximately 365 days to revolve around the Sun., T, A full cycle of moon phases takes 80 days., F about 27–29 days, There are four tools that scientists use to learn about space. Please mention and describe each tool., Telescopes are used to observe faraway objects; space probes are unmanned spacecraft; satellites orbit larger objects to collect and send data; spacecraft carry astronauts to study space., In your own words, please elaborate on how a shadow is formed., A shadow forms when an object blocks light, preventing it from reaching a surface behind the object., What things affect the shape and size of a shadow?, The distance between the object and the light source and the direction or angle of the light source., Describe how a solar eclipse happens., A solar eclipse occurs when the Moon moves between the Earth and the Sun, blocking the Sun’s light., What do you think will happen if the Sun gets farther away from Earth?, Earth would become colder, plants would struggle to grow due to less sunlight, and years would become longer., What is the difference between rotation and revolution? What effect do they have on human life?, Rotation is spinning on an axis and causes day and night; revolution is moving around another object and causes a year., Please explain how the constellation of stars can help with navigation., By locating the North Star, people can determine directions such as north, south, east, and west., What do you think will happen if the planets move freely in space?, Planets could collide, break apart, or cause dangerous debris in space., What makes space probes different from spacecraft? Which one do you think is better to explore space? What makes you think so?, Space probes are unmanned and controlled from Earth, while spacecraft carry humans; space probes are better for dangerous and distant exploration., Why do some people experience daytime while others experience nighttime at the same time?, One side of Earth faces the Sun and experiences daytime while the other side faces away and experiences nighttime..

4th Sci Ch 11

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