7H: UNITS 6-8: Final Exam Review- Part 1 Practice

What keeps planets in orbit around the Sun?

• the Sun's mass

• the Sun's period of rotation

• the Sun's gravitational force

• the Sun's color

The force of gravitational attraction between the Sun and Venus could be increased by reducing which of the following?

• The distance between the Sun and Venus

• the period of rotation of the Sun

• The mass of the Sun and Venus

• The speed of the orbit of Venus

As the mass of objects increases, gravity

• increases

• decreases

• stays the same

As the mass of objects decreases, gravity

• increases

• decreases

• stays the same

As the distance between objects decreases, gravity

• increases

• decreases

• stays the same

As the distance between objects increases, gravity

• increases

• decreases

• stays the same

What factor(s) cause one planet to have more gravity than other planets

• The planets mass

• The planet's distance from the Sun

• Both answers are correct

Sometimes I am called a "dirty snowball". I have a hydrogen cloud, coma, and a nucleus. I am invisible except when near the sun. What am I?

• Asteroid
• Star
• Meteor
• Comet

The picture shows an object in space that has an icy core with a tail of gas and dust extending far

• Asteroid
• Comet
• Meteor

Two factors effecting the magnitude of the force of gravity between 2 objects such as moon and earth are...

• mass and distance from each other

• mass and matter
• distance and weight 
• weight and mass