Gravity and Orbits Quiz

What does the fabric and buoy setup in the video represent?

• The ocean currents

• The concept of space-time

• The surface of the Earth

• The atmosphere

Which factor is NOT mentioned as affecting the orbit of an object?

• Mass of the object

• Distance from the larger mass

• Color of the object

• Friction

How does the radius of an orbit affect the orbital period?

• A larger radius increases the period

• A larger radius decreases the period

• Radius has no effect on the period

• A larger radius makes the period unpredictable

What is the mass of the small marble used in the demonstration?

• 21.4 grams

• 5.7 grams

• 185 grams

• 44.7 grams

How does the mass of an orbiting body affect its speed at the same radius?

• Lighter bodies move faster

• Mass does not affect speed

• Heavier bodies move faster

• Heavier bodies move slower

What happens when two masses are placed in orbit together?

• They repel each other

• They attract each other

• They stop moving

• They move in opposite directions

What is a gravity assist?

• A method to slow down a spacecraft

• A way to change a spacecraft's color

• A method to stop a spacecraft

• A technique to increase a spacecraft's speed using a planet's gravity

Why do planets in our solar system orbit in the same direction?

• The Sun's gravity forces them to move in one direction

• They were initially moving in all directions but some canceled each other out

• They are pushed by solar winds

• They were all formed at the same time

What initially caused planets to move in different directions?

• The presence of multiple suns

• Differences in their mass

• Variations in their formation

• Collisions with asteroids

What is the main reason for the current direction of planetary orbits?

• The rotation of the galaxy

• The influence of nearby stars

• The cancellation of opposing movements

• The gravitational pull of the Sun