Planet Types
What are the three types of planets?
Rocky (Terrestrial), Gas Giant, and Ice Giant
What is the order of the planets from the Sun?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
What is a solar system?
A star and all the objects that orbit it, including planets, moons, asteroids, and comets
What is the place value of the 7 in 4,782?
Hundreds
What do you always line up when adding or subtracting decimals?
The decimal points
What type of planet is Mercury, Venus, Earth, or Mars?
Rocky (Terrestrial)
What is Pluto classified as?
A dwarf planet
What is a galaxy?
A huge collection of stars, gas, and dust held together by gravity
Write 36,905 in expanded form.
30,000 + 6,000 + 900 + 0 + 5
Solve: 12.45 + 8.37
20.82
What is the main difference between a gas giant and an ice giant?
Gas giants are made mostly of hydrogen and helium gas. Ice giants are made of hydrogen, helium, and frozen ices like water, methane, and ammonia.
In our toilet paper model, one square represented how many kilometers?
10 million km
What is the name of the galaxy that contains our solar system?
The Milky Way
Write 4,782.356 in word form.
Four thousand, seven hundred eighty-two and three hundred fifty-six thousandths
Solve: 25.80 − 14.36
11.44
Why are rocky planets found close to the star?
It is hot close to the star, so gas and ice burn away. Only rock and metal survive, so rocky planets form there and stay small.
Mercury is 58 million km from the Sun. How many squares of toilet paper did we use?
5.8 squares
Why do we use models to study space?
Space is too big and too far away to see up close. Models let us shrink the solar system down to something we can hold, measure, and explore.
What is the place value of the 5 in 12.456?
Hundredths
In base ten blocks, what does a flat represent?
0.1 (one tenth)
Why are gas giants larger than ice giants?
Gas giants formed where there was more gas available to collect. Ice giants formed farther out where there was less material left, so they are smaller.
If one square of toilet paper represented 50 million km instead of 10 million km, would the model be larger or smaller?
Smaller — because each square represents more distance, so you need fewer squares.
What is one limitation of the toilet paper solar system model?
It does not show planet sizes. The planets are just stickers, not to scale.
Write 83,409.006 in expanded form.
80,000 + 3,000 + 400 + 0 + 9 + 0.0 + 0.00 + 0.006
Solve: 1.35 + 2.27 using base ten blocks.
What is the answer?3.62 (regroup 10 hundredths for 1 tenth)