Quiz #3 - Unit 1

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

The type of galaxy that has few young stars, little gas or dust, and NO arms is a/n

• elliptical galaxy
• spiral galaxy
• irregular galaxy
• barred spiral galaxy

What keeps the planets in orbit around the sun?

• gravity

• friction

• density

• distance

A person would weigh more on Jupiter than on the Earth because . . .

• Jupiter has more mass, and therefore more gravity
• Jupiter has less mass, and therefore more gravity
• Jupiter has more mass, and therefore less gravity
• Jupiter has less mass and therefore less gravity

What two things determine the gravity of an object?

• mass & weight

• mass & distance

• density & mass

• volume & distance

Which statement about gravity is true?

• gravity causes objects to pull towards one another

• gravity causes objects to push away from each other

• gravity only takes place between planets

• the moon doesn't have any gravity

Which has more mass, the Earth or the Moon?

• Earth

• Moon

• Their masses are the same