Unit 3: Our Solar System

What are the two most common elements that make up the Sun?

• hydrogen and helium

• iron and nickel

• neon and argon

• silicon and carbon

Tags

NGSS.HS-ESS1-3

Gravity is the force that attracts all objects based on...

• the shape of an object's orbit

• mass and distance

• temperature and volume

• density and speed

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of the following best describes Ptolemy's model?

• geocentric; elliptical orbits

• heliocentric; elliptical orbits

• geocentric; wheels on wheel

• heliocentric; wheels on wheels

Which of the following is NOT a terrestrial planet?

• Earth

• Venus

• Mercury

• Neptune

Which of the following is NOT a gas giant planet?

• Mercury

• Jupiter

• Uranus

• Saturn

Both Jupiter and Saturn are incredibly massive, which means they have...

• many moons

• large densities

• high temperatures

• low temperatures

Tags

NGSS.MS-ESS1-2

When a meteoroid burns up inside a planet's atmosphere it forms a...

• asteroid

• comet

• meteor

• meteorite

Which planet has the highest average temperature due to its thick atmosphere?

• Earth

• Mars

• Mercury

• Venus

Which planet has the greatest average density?

• Earth

• Saturn

• Mars

• Uranus

Which way does centripetal force act on an object?

• outwards towards the center of rotation

• inwards towards the center of rotation

• parallel to the object's motion

• perpendicular to the object's motion