vocabulary
Name the 4 terrestrial planets
Mercury, Venus, Earth, Mars
The one variable you change in an experiment, what you are testing
Independent Variable
The branch of science that focuses on stars, planets, and other objects in space is called _______
When a planet spins on its axis one time, this is called a R________________
Rotation
Which planet is closest to the sun?
Mercury
All models have limitations. Which of these is a limitation for your solar system on a string model?
A. The order of the planets
B. The size of the planets
C. The names of the planets
B. The size of the planets was not accurate, so it was a limitation.
What you are observing in the experiment
Dependent Variable
What galaxy do we live in?
Milky Way Galaxy
Do all planets have the same length rotations?
No (some planets have longer or shorter rotations than Earth)
Which planet is farthest from the sun?
The unit of measurement equal to the distance between the Earth and the sun.
Astronomical Unit (AU)
What stays the same in an experiment
Control variable
What is the 3rd planet from the sun?
Earth
The seasons on Earth are caused by the ______ of Earth' s axis
Tilt
What happens to gravity as a planets size increases?
The gravity also increases. The bigger the planet, the more gravity.
A large system of dust, gas, stars, and other celestial bodies that has a particular shape.
Galaxy
The things a model does NOT show us well. What the model is not good for are called_________
limitations
What does terrestrial planet mean?
These planets have a dirt/ solid surface
Each season lasts about __ months
3
Name the planets in order from the sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
The entirety of everything that is know to exist in space.
Universe
What a model shows well. What it is good for are called ____________
benefits
Why are some planets called a gas giant? What does this mean?
These planets do not have a dirt/solid surface. They are made of gases.
The inner planets are separated from the outer planers by an _______________
Asteroid belt
Our sun is a ________ __________ star
Red Giant