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We are learning to: describe how objects in the solar system are in regular and predictable motions that explain days, years, and seasons. We are looking for: description of: Days- Earth rotates on its axis every 24 hours Years-Earth revolves around the sun 365.25 days Seasons-Earth revolves around the sun as the Earth is tilted on its axis

Why do we have night and day?

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We are learning to : describe how objects in the solar system are in regular and predictable motions that explain days, years, and seasons. We are looking for : description of: Days- Earth rotates on its axis every 24 hours Years-Earth revolves around the sun 365.25 days - PowerPoint PPT Presentation

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Page 1: Why do we have night and day?

We are learning to: describe how objects in the solar system are in regular and predictable motions that explain days, years, and seasons.

 We are looking for: description of: • Days- Earth rotates on its axis every 24 hours• Years-Earth revolves around the sun 365.25

days• Seasons-Earth revolves around the sun as the

Earth is tilted on its axis

Page 2: Why do we have night and day?

Why do we have night and day?

A. Earth’s rotationB. Earth’s revolutionC. Tilt of the Earth on

its axisD. I need Help!

Page 3: Why do we have night and day?

What causes Earth to experience different seasons?

A. It rotates on its axis while it revolves around the sun

B. It revolves on its axis while it rotates around the sun

C. It is tilted while it rotates around the sun.

D. It is tilted while it revolves around the sun.

E. I need help!

Page 4: Why do we have night and day?

If the Earth’s Revolution was slower, we would experience

A. Longer daysB. Shorter daysC. Longer yearsD. Shorter yearsE. I need help!

Page 5: Why do we have night and day?

Of the following, which does not affect seasons?

A. Earth is tilted 23.5 degrees

B. The Earth revolves around the sun

C. The Earth’s distance from the sun

D. I need help!

Page 6: Why do we have night and day?

We are learning to: describe how objects in the solar system are in regular and predictable motions that explain phases (moon cycles), eclipses, tides  We are looking for: a description of -Phases-moon revolves around the Earth approximately once a month

-Eclipse-are random predictable; one object moves in front of another object in relation to the position of the sun

-Tides-high tide occurs approximately twice a day due to the gravitational pull of the moon

Page 7: Why do we have night and day?

Which phase occurs when the moon is in between the Earth and

the sun?A. Full moonB. New moon C. 1st Quarter moonD. 3rd quarter moon

Page 8: Why do we have night and day?

What causes us to see different phases of the moon?

A. Light refracts off of the surface of the moon.

B. The moon rotates around the Earth.

C. We see different perspectives of the moon.

D. I need help!

Page 9: Why do we have night and day?

What is the main cause of tides?

A. The gravitational pull of the moon

B. The gravitational pull of the sun

C. The gravitational pull of the Earth

D. I need help!

Page 10: Why do we have night and day?

If the sun, moon, and Earth are perfectly aligned (as pictured), what event will occur on Earth?

A. Neap TideB. Solar EclipseC. Lunar EclipseD. Seasonal Change

Page 11: Why do we have night and day?

When studying a solar eclipse, which would be a proper method of viewing the sun?

A. Wear sunglassesB. Use a telescopeC. Use a magnifying

glassD. Use filters that are

specifically designed to view eclipses

E. I need help!

Page 12: Why do we have night and day?

We are learning to: explain that gravitational force determines motions in the solar system and keeps the planets in orbit around the sun. We are looking for: explanation that

*All objects in the solar system have gravity.

*Sun has the greatest mass, thus has the greatest gravitational pull within our solar system.

*Since planets have inertia, they do not get pulled into the sun.

*Gravity keeps the planets in orbit.

Page 13: Why do we have night and day?

What is an object’s resistance to a change in motion?

Gravity

Inerti

a M

ass

Fricti

on

I need help!

0 0 000

A. GravityB. InertiaC. MassD. FrictionE. I need help!

Page 14: Why do we have night and day?

Predict what would happen if Earth stopped its forward motion around the sun?

It will

fly off i

nto spac

e.

It will

hit the n

eares

t p...

It will

get pulle

d into t..

It will

contin

ue to

rev..

.

0 000

A. It will fly off into space.B. It will hit the nearest

planet.C. It will get pulled into the

sun.D. It will continue to

revolve.

Page 15: Why do we have night and day?

What keeps planets revolving around the sun?

The sun’s

grav...

The plan

et’s m

...

The plan

et’s m

...

The Sun’s

iner

...

I nee

d help!

0 0 000

A. The sun’s gravitational pull.

B. The planet’s mass.C. The planet’s magnetic

field.D. The Sun’s inertia.E. I need help!

Page 16: Why do we have night and day?

We are learning to: *Compare the composition and orbits of comets and asteroids with that of Earth.

We are looking for: Composition of comets, asteroids, and Earth1. Earth is composed of rock with many layers and has a core of dense metal2.Comets are composed of ice and dust (dirty snowball)3. Asteroids are composed of chunks of solid rock with heavy metalOrbits of comets, asteroids, and Earth’s1. Earth’s orbit is elliptical 2. Comet’s orbit is elongated and elliptical 3. Asteroids are irregularly shaped and orbit in the asteroid belt

Page 17: Why do we have night and day?

We are learning to: Describe the effect that asteroids or meteoroids have when traveling through space and entering planetary atmospheres.

 We are looking for: 1. Asteroids are large rocky objects that orbit the sun. If

they hit the Earth the impact could be catastrophic. 2. Meteorites are small rocky objects hit the Earth all the

time and do not cause much damage. 3. A rock changes its classification based on its location:

Meteoroid – rock located in outer spaceMeteor – rock burning up in the Earth’s atmosphere (Shooting Star/Meteor

Shower)Meteorite – rock that hits the ground

Page 18: Why do we have night and day?

An icy object that has an elongated orbit around the sun is referred to as

a(n)….

A. AsteroidB. CometC. MeteorD. MeteoriteE. I don’t know!

Page 19: Why do we have night and day?

The flash of light produced when a meteoroid passes through the Earth’s

atmosphere is a(n)

A. AsteroidB. CometC. MeteorD. MeteoriteE. I don’t know!

Page 20: Why do we have night and day?

Why does a meteoroid create a streak of light when entering the Earth’s atmosphere?

A. Light from the sun is reflected off the surface of each

B. Energy is released from the objects

C. Lightning is produced from these objects

D. Light is a result of friction from the gasses in the atmosphere

E. I don’t know!

Page 21: Why do we have night and day?

Which of the following applies to meteoroids and asteroids.

A. They are similar in size.B. They are rocky and/or

metallic.C. They are composed of

frozen gases, ice, and dust.

D. They orbit the sun in highly elliptical patterns.

E. I don’t know!

Page 22: Why do we have night and day?

Which of the following objects would cause the most damage if it hit the Earth?

A. AsteroidB. MeteoroidC. MeteoriteD. MeteorE. I don’t know!

Page 23: Why do we have night and day?

We are learning to: identify and describe telescopes, probes, satellites, and space crafts We are looking for:telescope- refracting, reflecting, and radio are used to view distant objects

probe-machines sent to other locations in the solar system and are used to investigate/explore

satellite-orbits around the earth or other planets and are used to take photos and collect data

space craft-mode of transportation to send humans to locations in the solar system;

Page 24: Why do we have night and day?

We are learning to: examine advances of different people, culture, and times in astronomy.

 We are looking for: examples of how telescopes have changed and

been improved over time and their impact on science and technology .

Page 25: Why do we have night and day?

Which type of telescope focuses light using a mirror?

A. Reflecting TelescopeB. Refracting TelescopeC. Radio TelescopeD. Infrared TelescopeE. I need help!

Page 26: Why do we have night and day?

One of the greatest advancements in astronomy was the telescope. Which is

the correct order of advancements?

A. Radio- refracting-reflectingB. Reflecting – refracting –

radioC. Refracting-reflecting-radioD. Radio- reflecting-refractingE. I need help!

Page 27: Why do we have night and day?

Which type of telescope focuses light through transparent lenses?

A. Reflecting TelescopeB. Refracting TelescopeC. Radio TelescopeD. Infrared TelescopeE. I need Help!

Page 28: Why do we have night and day?

Which of the following is an advantage of a space-based, satellite telescope like

Hubble?A. Satellite telescopes are much closer

to the stars.B. Satellite telescopes are able to see

through solid objects.C. Satellite telescopes can detect

wavelengths that are blocked by the atmosphere.

D. Satellite telescopes have the ability to see the future.

E. I need help!

Page 29: Why do we have night and day?

We are learning to: explain interstellar distances are measured in light years We are looking for: the explanation of and the use of the light year

*explain a light year as the distance light travels in a year

*explain that distances are too great to be measured in miles or kilometers

Page 30: Why do we have night and day?

A light year is a measurement of…

a) Distanceb) Timec) Speedd) Acceleratione) I don’t know! I

need help!

Page 31: Why do we have night and day?

Why do astronomers measure interstellar distances in light years instead of

kilometers or miles?A. Light years are a measure

of time.B. Miles and kilometers are too

small of a unit. C. Miles and kilometers are too

large of a unit.D. I don’t know! I need help!

Page 32: Why do we have night and day?

You are viewing a star that is 20 light years away. When was the light from this star

produced?

a) Before you were born

b) After you were born

c) 10 years agod) 2 years agoe) I don’t know! I

need help!

Page 33: Why do we have night and day?

We are learning to: examine the life cycle of a star (characteristics; HR diagram)

We are looking for: a description of how stars are classified by

characteristics and then organized on an HR diagram.CharacteristicsSize- Giant, main sequence, and dwarfTemperature- blue=hot; red=coolerBrightness- apparent brightness and absolute magnitudeHR diagram shows temperature, brightness, color of stars and where the star is in its life cycle.

Used to graph the surface temperature (x-axis) vs. brightness (y-axis)

Hotter stars are on left side of graph; cooler stars on the right side of the graph

Brighter stars on top of graph; dimmer stars on bottom of graph

Page 34: Why do we have night and day?

Which characteristic of stars cause them to be different colors?

a) chemical composition

b) distancec) sized) temperaturee) I need help.

Page 35: Why do we have night and day?

Which star would be the brightest if all the stars are the same distance

from Earth?a) Main sequenceb) Neutron Starc) Red super giantsd) White dwarfe) I need help.

Page 36: Why do we have night and day?

How would you classify our star, the sun, on the H-R diagram?

a) Main sequenceb) Red giantc) White dwarfd) Red supergiante) I need help.

Page 37: Why do we have night and day?

We are learning to: Examine the life cycle of a star and predict the next likely stage .

 We are looking for: progression of the stages of a star’s life

Nebulae- cloud of gas and dust Protostar- fusion beginsMain sequence- average starGiant/red-giant- more massive starsNova/supernova - exploding starWhite dwarf- no nuclear processBlack dwarf- no heat or lightBlack Hole (area of large gravitational attraction) or Neutron

star (very dense star) 

Page 38: Why do we have night and day?

If given a protostar, what is the next likely stage of the star?

a) Super Giantb) Novac) Main Sequenced) Neutron Stare) I need some help

Page 39: Why do we have night and day?

What is the first stage of the birth of a star?

a) Main sequenceb) Nebulac) Giantd) Dwarfe) I need some help.

Page 40: Why do we have night and day?

What happens to the most massive stars as they near their death?

a) super nova to a black hole

b) super nova to a red giant

c) becomes a white dwarf

d) nothing happense) I need some help.

Page 41: Why do we have night and day?

What is the next likely stage of our sun?

a) White dwarfb) Black dwarfc) Red giantd) Super novae) I need help

Page 42: Why do we have night and day?

We are learning to: explain that universe has billions of galaxies and are classified by shape

We are looking for: shapes of galaxies• Spiral- mix of old and new stars• Elliptical- more developed galaxies with

older stars• Irregular-newer galaxies with newer stars

Page 43: Why do we have night and day?

By what are galaxies classified?

a) Colorb) Temperaturec) Sized) Shape

Page 44: Why do we have night and day?

What type of galaxy is illustrated in the following picture?

a) Irregularb) Spiralc) Ellipticald) I have no idea.. I

need help!

Page 45: Why do we have night and day?

What type of galaxies contain older stars?

a) Ellipticalb) Irregularc) Barred shaped) spiral