Learning About the Universe

What attractive force holds the planets in orbit?

• inertia

• mass

• distance

• gravity

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is a type of probe?

• rovers/landers

• telescopes

• space shuttle

Wavelength, frequency, and energy are related. What happens to a wave as its wavelength gets shorter?

• Its frequency and energy increase.

• Its frequency and energy decrease.

• Its frequency increases, while its energy increases.

• Its frequency decreases, while its energy decreases.

Tags

NGSS.HS-PS4-1

Which statement explains why the objects of the solar system revolve around the sun?

• The Sun holds 99% of the mass in the solar system, so it has an enormous gravitational pull.

• The Sun generates its own energy, so the planets stay close to absorb its heat and light.

• Light waves from the Sun cause the planets to revolve around it.

• Heat energy from the Sun attracts the planets and keeps them in orbit.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which describes a characteristic that is shared by different galaxies in the universe?

• They all are about the same distance from the Milky Way.

• They all have similar planets and stars.

• They all formed because of gravity.

• They all have the same shape.

Tags

NGSS.MS-ESS1-2

Which statement about the Milky Way is correct?

• The Milky Way is unique in that it contains planets and other celestial bodies.

• The Milky Way does not belong to a cluster of galaxies.

• The Milky Way is one of hundreds of billions of galaxies.

• The Milky Way is so big that it is not affected by gravity.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is the basic shape of every planet's orbit?

• circle

• ellipse

• square

• triangle

Which explains why scientists no longer consider Pluto to be a planet?

• Scientists discovered it does not orbit the Sun

• Scientists found that Pluto did not have any gravity

• Scientists changed the definition of a planet based on new information

• Scientists decided there should only be 8 planets in the solar system

The solar system formed 4.6 billion years ago when a disk of dust and gas was pulled together by ________

Tags

NGSS.MS-ESS1-2

Spiral, elliptical, and irregular are three types of _________ in the universe