# EARTH SCIENCE-scientists/famous Astronomers

22 Questions
• 1.
Who calculated that the earth and the sun, but were too small
• A.

Kepler

• B.

Aristarchus

• C.

Galileo

• 2.
the plotemic system was..
• A.

An autobiography

• B.

A volume about the movements of planets

• C.

Book about the measuring of planets

• 3.
who discovered earth was a planet
• A.

Kepler

• B.

Copernicus

• C.

Brahe

• 4.
Who proposed the model of the solar system with the sun at the center
• A.

Copernicus

• B.

Kepler

• C.

Brahe

• 5.
Who made most of mars obervations, plus were more precise then before
• A.

Brahe

• B.

Kepler

• C.

Galileo

• 6.
Who spent 20 years plotting the planets
• A.

Kepler

• B.

Brahe

• C.

Copernicus

• 7.
Who discovered the three laws of planetary motion, plus had a strong mathematical mind
• A.

Brahe

• B.

Galileo

• C.

Kepler

• 8.
True or false: the orbit of mars and other planets are ellipses, not circles
• A.

True

• B.

False

• 9.
As mars moves away from the sun it...and when it moves toward the sun it....
• A.

Slows down....speeds up

• B.

Speeds up....slows down

• C.

Gets hotter....gets cooler

• 10.
Keplers 2nd law of planetary motion states:
• A.

The path of each planet around the sun is an ellipse, with the sun at one focus

• B.

The square length of time it takes a planet to orbit the sun is proportional to it distance around the earth

• C.

Each planet revolves so an imaginary line connecting it to the sun sweeps over equal areas at equal time intervals

• 11.
Keplers third law states that the square length of time it takes a planet to orbit the sun is proportional to the cube of its mean distance from the...
• A.

Earth

• B.

Sun

• C.

Moon

• 12.
And AU is NOT equal to...
• A.

The earths distance from the sun

• B.

150 million kilometers

• C.

8.3 light-minutes

• 13.
Galileos most important contributions were...
• A.

The three laws of planetary motion

• B.

His descriptions of the behavior of moving objects

• C.

His work with the sun

• 14.
Who first used a telescope
• A.

Brahe

• B.

Copernicus

• C.

Galileo

• 15.
What did galileo NOT discover...
• A.

Four satellites, or moons orbiting jupiter

• B.

Discovery that the planes are just points of light

• C.

Venus had phases, just like the moon

• 16.
True or false: the moon surface is smooth
• A.

True

• B.

False

• 17.
What is a sunspot, who discovered it?
• A.

Dark regions, kepler

• B.

Dark regions, galileo

• C.

Light, swirling lava, brahe

• 18.
Who created the law of universal gravitation
• A.

Newton

• B.

Galileo

• C.

Brahe

• 19.
True or false: a moving object will continue to move at a constant speed and in a straight line with gravity is called inertia
• A.

True

• B.

False

• 20.
According to........, every body in the universe attracts every other body with a force that is directly proportional to their masses and inversely proportional to the square of the distance between their mass ( law of gravitation)
• A.

Newton

• B.

Galileo

• C.

Kepler

• 21.
The greater the mass of the object....
• A.

The lesser the gravitational force

• B.

The greater the gravitational force

• C.

The more sunspots

• 22.
The force of gravity acting upon an object is...
• A.

Mass

• B.

Density

• C.

Weight

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