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Planets are always approximately spherical in shape. Because of their rotation, they do bulge slightly at the equator, creating a shape called an oblate spheroid. This can be observed directly with telescopes. As for the size of planets, we have observed them a lot, not just with telescopes but also with planetary probes, but in addition to that, the way satellites orbit a planet (their distance and speed) tells us about the planet's gravitational field, and hence, its mass. Most planets have satellites.
What else can I help you with?
What two measurable properties directly tell us the size and shape of a planet's orbit?
The semi-major axis (size) and the eccentricity (shape).
Would a smaller planet than earth with the same shape and size have more gravity?
If the planet is smaller, then it can't have the same size. If you assume that a smaller planet has the same density as Earth (and therefore less mass), its surface gravity will be smaller. If you assume that a smaller planet has the same mass as Earth (and therefore more density), its surface gravity will be greater. This is because we would be closer to the planet's center - or to the planet's matter in general.
Is a magnets strength dependent on size or shape?
A magnet's strength is primarily dependent on the material it is made of and how it is magnetized. Size and shape can influence the distribution of the magnetic field and how it interacts with other magnets or objects, but they do not directly determine the strength of the magnet.
Does planet shape life or life shape the planet?
Both are true there is an interdependance.
What is the size and shape for Venus?
If you mean the shape of the orbit, it's an ellipse.
What affects the shape of the planet's orbit?
The size of the planet along with the gravitational force within the planet.
What affects the shape of a planets orbit?
The size of the planet along with the gravitational force within the planet.
What two measurable properties directly tell us the size and shape of a planet's orbit?
The semi-major axis (size) and the eccentricity (shape).
What 2 factors determine a pearls worth?
size, and shape
What are two factors that determine the proporties of a hydrocarbon?
This is a little vague, but size and shape?
What four factors determine the location size shape and direction of gyre?
The four factors that determine the location, size, shape, and direction of gyres are Earth's rotation, wind patterns, coastline shape, and water density. These factors contribute to the formation and circulation of gyres in the ocean.
What two factors determine the physical charactersistics of sediments?
The two factors that determine the physical characteristics of sediments are the size or grain size of the particles and the shape of the particles. Grain size refers to the diameter of the sediment particles, while shape refers to the angularity and roundness of the particles.
What describes a rock's texture geologists determine?
The size shape and pattern of the rocks grains
Does the shape or size of a ball effect the bounce of it?
Does the size of the ball determine how high the ball will bounce? I need the answer for a science project.
How big will a planet be if it is located far from the sun?
The size of a planet is not related to it's distance from the sun. Planet mass and orbital velocity are factors that determine it's distance from the sun.
If you know the size of an asteroid you can determine its density by?
determining its mass from its gravitational pull on a spacecraft, satellite, or planet.
Does the size or shape of an animal determine whether an animal is classified as cold blooded or warm blooded?
The answer is no
