Stars
Earth's Motion
True or False
Describe It
Define It
100
Stars are massive balls of ______________, held together by gravity
What is gas.
100
The Earth ____________ on its axis, which causes the Sun to rise and set each day.
What is rotates.
100
Scientists have provided evidence that proves the big bang is a FACT.
What is False, the big bang is a THEORY.
100
The distance light can travel in a year.
What is a light-year.
100
The motion of shadows on the ground throughout the course of the day is evidence that the Earth is....
What is rotating.
200
The brightest star in the sky is the ____________.
What is the sun.
200
The Earth ___________ around the Sun once every 365 days.
What is revolves.
200
Earth can be found in the Milky Way galaxy.
What is True.
200
This is the unit for mass.
What is grams (g).
200
These three factors determine how bright a star is.
What are size, temperature, and distance from Earth.
300
The sun is this type of star.
What is a yellow dwarf.
300
Earth's _____________ is observable through the change in seasons.
What is revolution.
300
Scientists believe that at the center of each galaxy is a black hole.
What is True.
300
Galaxies are constantly revolving around this.
What is a black hole.
300
Define galaxy.
What is a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
400
How ___________ a star is to us on Earth depends on its size and distance.
What is luminous (bright).
400
This characteristic of Earth is measured at 23.5 degrees.
What is Earth's titled axis.
400
Scientists now know that the Earth is in the center of our Solar System.
What is False, the sun is the center of our Solar System.
400
This galaxy is a spiral-shaped formation comprised of billions of stars in which Earth can be found.
What is the Milky Way galaxy.
400
Define supernova.
What is an exploding star; a star that has reached the end of its lifespan.
500
When a star reaches the end of its lifespan, it becomes a ______.
What is a supernova.
500
The strength of gravity depends on these two things.
What is the distance between two objects, and the mass of the objects.
500
Supernovas occur when a star is being born.
What is False, supernovas form when a star dies.
500
The majority of matter in our universe is found as....
What is dark matter and dark energy.
500
Define black hole.
What is an object that has an incredibly large mass and very strong gravity; not even light can escape from a black hole's gravity.
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