What is the geocentric model and who proposed this theory?
Geocentric model states that the earth is at the center of the universe and Ptolemy proposed this theory.
17) What would happen if there were no gravitational forces acting on the moon?
It would continue at a constant speed in a straight line through space.
12) What planet allows water to freeze and melt and thus sustains life?
Earth
7) What is the origin of an asteroid?
Main asteroid belt - located between Mars and Jupiter
10) Which of the following answer choices correctly explains the way planets revolve around the sun?
B. Planets further from the Sun have slower orbital speeds and longer periods of revolution because of the Sun’s gravity.
3) What is the heliocentric model and who proposed this theory?
The Heliocentric model states that the sun is at the center of the universe and Copernicus proposed this theory.
13) Does the sun have more gravitational pull on Neptune or the Earth? Explain your answer.
Earth because the earth is closer to the sun.
4) What do the four inner planets have in common?
They are smaller planets, have rocky surfaces and thin atmospheres.
8) What is the origin of a comet?
Kuiper Belt and Oort Cloud
27) Which number describes an asteroid?
1.
26) Draw the heliocentric and geocentric models in the space to the right.
Heliocentric
Geocentric
11) Which part of the model shows gravity?
B. String
2) What do the four outer planets have in common?
They are larger than earth and gaseous planets.
9) What is the origin of a meteoroid?
Comets or asteroids
What's 12 x 11?
121
25) Which question, if answered, will BEST help you predict how the model of the Milky Way will look in the future?
B. How will the Milky Way continue to move outward as a result of the Big Bang?
6) Your teacher demonstrated the moon going around the earth using a ball on the string. What force was represented by the string?
Gravity
16) Students constructed a model of the solar system and they used fruit to represent the planets. If Venus is the size of a grape, which of the following fruits would represent earth?
Honeydew, Cantaloupe, lemon, lime or grape
Grape because Venus is earth’s twin in regards to size
19) What is the difference between an asteroid and a meteoroid?
The size of their bodies. Meteoroids are usually much smaller than asteroids.
The inner and outer planets
What type of Galaxy is the Milky Way and where are we located in it?
A spiral galaxy and on the outer arm on the lower left
21) Based on the chart below, what planet has the highest density?
Earth has the highest density at 5,520 higher than the gas giants.
20) A scientist made the data table below to explain two space objects he found. Label the two objects.
A-Outer planets
B- Inner planets
24) Which of the following questions would BEST confirm that the object is a meteor?
A. Did this object burn up in the mesosphere?
Who provided evidence to support the heliocentric theory?
Kepler and Galileo