REVIEW #1

WHAT IS ASTRONOMY?

WHAT IS ASTRONOMY?

IT IS THE SCIENCE THAT STUDIES OBJECTS IN SPACE (OFF PLANET EARTH).

MANNED AND UNMANNED SPACE PROBES CAN BE USED TO STUDY OBJECTS CLOSE TO EARTH, BUT WHAT IS THE MOST IMPORTANT TOOL THAT SCIENTISTS CAN USE TO STUDY DISTANT OBJECTS?

MANNED AND UNMANNED SPACE PROBES CAN BE USED TO STUDY OBJECTS CLOSE TO EARTH, BUT WHAT IS THE MOST IMPORTANT TOOL THAT SCIENTISTS CAN USE TO STUDY DISTANT OBJECTS?

TELESCOPES (LIGHT)

WHAT ARE THREE ADVANTAGES THAT A TELESCOPE WOULD HAVE OVER USING THE HUMAN EYE?

WHAT ARE THREE ADVANTAGES THAT A TELESCOPE WOULD HAVE OVER USING THE HUMAN EYE?

1)A TELESCOPE CAN GATHER MORE LIGHT. THIS WOULD HELP IN SEEING FAINT OBJECTS.2)A TELESCOPE CAN MAGNIFY DISTANT OBJECTS.3)TELESCOPES CAN USE LIGHT AT WAVELENGTHS OTHER THAN VISIBLE LIGHT.

WHAT IS LIGHT?

WHAT IS LIGHT?

IT IS A FORM OF ENERGY THAT HAS BOTH WAVE AND PARTICLE PROPERTIES.

WHAT IS THE WAVELENGTH RANGE OF VISIBLE LIGHT?

WHAT IS THE WAVELENGTH RANGE OF VISIBLE LIGHT?

400 TO 700 nm

AS THE WAVELENGTH OF LIGHT INCREASES, THE ENERGY PER PHOTON___________________.

AS THE WAVELENGTH OF LIGHT INCREASES, THE ENERGY PER PHOTON___DECREASES_______.

NAME THREE THINGS THAT ASTRONOMERS CAN USE LIGHT TO MEASURE.

NAME THREE THINGS THAT ASTRONOMERS CAN USE LIGHT TO MEASURE.

1.SURFACE TEMPERATURE OF STARS2.ELEMENTS PRESENT IN STARS AND NEBULAES3.SPEED AT WHICH OBJECTS ARE MOVING4.IF THERE ARE PLANETS AROUND A STAR5.AGE OF STARS

HOW CAN ASTRONOMERS USE TELESCOPES TO COLLECT MORE LIGHT?

1.USE LARGER MIRRORS2.MAKE TIME EXPOSURES

A SOLID OBJECT EMITS A _____________ SPECTRA WHEN HEATED.

A SOLID OBJECT EMITS A _CONTINUOUS__ SPECTRA WHEN HEATED.

GASES GIVE _____________ SPECTRA WHEN HEATED.

GASES GIVE __LINE_____ SPECTRA WHEN HEATED.

EVERY ELEMENT HAS A______________ SPECTRUM.

EVERY ELEMENT HAS A_DIFFERENT____ SPECTRUM.

WHAT ARE THE THREE PARTICLES THAT MAKE UP AN ATOM?

WHAT ARE THE THREE PARTICLES THAT MAKE UP AN ATOM?

PROTONNEUTRONELECTRON

AN ATOM IS MOSTLY ________________.

AN ATOM IS MOSTLY __EMPTY SPACE__.

PARTICLE MASS CHARGE LOCATION

FILL IN THE ABOVE TABLE.

PARTICLE MASS CHARGE LOCATION

PROTON 1 + NUCLEUS

NEUTRON 1 0 NUCLEUS

ELECTRON

0 - SHELL

FILL IN THE ABOVE TABLE.

ELEMENT

Z A Protons Neutrons

Electrons

Na 11 23

C 6 6

Ar 18 40

K 19 20

Fill in the table

http://www.privatehand.com/flash/elements.html

ELEMENT

Z A Protons Neutrons

Electrons

Na 11 23 11 12 11

C 6 12 6 6 6

Ar 18 40 18 22 18

K 19 39 19 20 19

Fill in the table

http://www.privatehand.com/flash/elements.html

2.65 x 10-4

3.342 x 104

4.56 x 10-5

4.44 x 10

6.64 x 10-6

CONVERT THE ABOVE NUMBERS IN SCIENTIFIC NOTATION TO REGULAR NUMBERS.

2.65 x 10-4 0.000265

3.342 x 104 33420

4.56 x 10-5 0.0000456

4.44 x 10 44.4

6.64 x 10-6 0.00000664

CONVERT THE ABOVE NUMBERS IN SCIENTIFIC NOTATION TO REGULAR NUMBERS.

0.0000077

24900

0.0336

1480000

0.0000357

CONVERT THE ABOVE NUMBERS TO SCIENTIFIC NOTATION.

0.0000077 7.7 X 10-6

24900 2.49 X 104

0.0336 3.36 X 10-2

1480000 1.48 X 106

0.0000357 3.57 X 105

CONVERT THE ABOVE NUMBERS TO SCIENTIFIC NOTATION.

WHAT KIND OF ORBIT DID KEPLER FIND THAT THE PLANETS HAD AROUND THE SUN?

WHAT KIND OF ORBIT DID KEPLER FIND THAT THE PLANETS HAD AROUND THE SUN?

ELIPTICAL

KEPLER’S STUDY OF THE ORBITS OF THE PLANETS HELPED NEWTON ESTABLISH THE LAW OF _____________.

KEPLER’S STUDY OF THE ORBITS OF THE PLANETS HELPED NEWTON ESTABLISH THE LAW OF __GRAVITY____.

WHY SHOULD YOU NEVER POINT A TELESCOPE WITHOUT A SUN FILTER AT THE SUN?

WHY SHOULD YOU NEVER POINT A TELESCOPE WITHOUT A SUN FILTER AT THE SUN?

YOU COULD EXPLODE THE EYE PIECE AND POSSIBLY BLIND SOMEONE (YOURSELF).