Vocabulary
The force that pulls objects toward one another is called
Gravity
An object in space that produces its own light and heat is called a(n)
star
Which object's name changes based on its location?
meteoroid
What happens to the force of gravity when the distance between two objects decreases?
increases
How are solids, liquids, and gases different from one another?
The motion of their particles is different. Solids have the least motion, and gases have the most. The motion of liquids is in between.
The Sun, the planets, their moons, and other objects make up the
solar system
The gravity of the Moon is mostly responsible for causing a(n) _________ on Earth.
tide
What is the most significant discovery Galileo made using his telescope?
Moons revolve around Jupiter.
If the Sun increased in size, what would happen to the planets?
They will be drawn closer to the Sun.
Which of the following is not a physical property of matter?
temperature
An object in space that circles around another object is called a (n)
satellite
The energy of the Sun is produced by
fusion
Which of the following processes produces the Sun's energy?
fusion
A student wants to make accurate observations about the path of Mars across the night sky. Which tool should the student use?
telescope
Changing from solid to gas is called
sublimation.
A rock that revolves around the Sun is called a(n)
asteroid
Which planet is closest to the Sun?
Mercury
Your science teacher suggests that you do an experiment to study how comets form. What is the next step you are likely to take?
Make a hypothesis.
Which of the following lists gives the names of the planets in order of their distance from the Sun?
Jupiter, Saturn, Uranus, Neptune
What are the basic building blocks of matter?
elements
A mixture of frozen gases, ice, dust, and rock that circles around the Sun is called an)
comet
The amount of matter an object contains is its
mass
Which of the following best describes the effect of the Sun's gravity on the planets?
Each planet is drawn toward the Sun.
What is the difference between walking on Earth and on the Moon?
We would have less weight on the Moon. Gravity is greater on Earth than on the Moon.
Which three elements make up most living things?
carbon, hydrogen, oxygen