CULMINATING Space

Question 1

What does the Hertzsprung-Russell (H-R) Diagram show?

Answer 1

Star brightness vs. temperature

Blue stars are hottest, red stars are coolest.

Question 2

What do spectral lines indicate in a star?

Answer 2

What elements are in a star’s atmosphere

Question 3

Define rotation in the context of planetary motion.

Answer 3

A planet spinning on its axis (causes day and night)

Question 4

Define revolution in the context of planetary motion.

Answer 4

A planet orbiting around the sun (causes years)

Question 5

What causes the seasons on Earth?

Answer 5

Earth’s tilted axis

Question 6

List the parts of the Sun.

5

Answer 6

• Core
• Radiative zone
• Convective zone
• Photosphere
• Corona

Question 7

What are celestial objects?

Answer 7

Anything in space

Question 8

Define meteoroids.

Answer 8

Space rocks

Question 9

What happens to meteors?

Answer 9

They burn in the atmosphere

Question 10

What are meteorites?

Answer 10

They hit Earth

Question 11

What is the value of 1 Astronomical Unit (AU)?

Answer 11

149,599,000 km

Question 12

What does 1 AU measure?

Answer 12

The distance from Earth to the Sun

Question 13

What are luminous objects?

Answer 13

Objects that emit their own light (e.g., stars)

Question 14

What are non-luminous objects?

Answer 14

Objects that reflect light (e.g., planets)

Question 15

What are constellations?

Answer 15

Star patterns

Question 16

What are galaxies?

Answer 16

Clusters of stars and dust held by gravity