Science Topic Outreach Posters (Page 4 of 4) in pdf

cience

STOP

When Stars Go boom

opic

utreach

for science

Answers • Section 1.2

osters

Level ONE Answers (#1-3)

1. What is the Sun? Answer: c) a star

2. Which is larger—the Sun or the Earth? Answer: The Sun

3. Can you think of two things that the Sun provides for us?

Answers (need two): heat, warmth, light, source of energy

Level TWO Answers (#4-6)

4. What constellation is pictured on this poster? Answer: Orion

5. A star 10-20 times bigger than the Sun Answer: a) has a shorter lifespan than the Sun

6. What common force that holds you to the Earth gives a star its energy? Answer: Gravity

Level THREE Answers (#7-10)

7. Scientists use many different tools to help them study stars.

Match the tool with information it provides.

__b__ small telescope

a) X-ray images from space

__c__ Hubble telescope

b) visual images from Earth

__a__ Chandra observatory

c) visual images from space

8. Was the star that exploded and caused the Crab Nebula smaller or larger than our Sun?

Answer: larger

Based on the information presented on the poster, explain how you know.

Answer: The poster says massive explosions, supernova explosions, come from stars

much larger than ours. The Crab Nebula was formed by a huge explosion, so that

star must have been larger than our Sun.

9. Using the chart at the right, which star could currently represent the Sun?

Answer: Star C. The poster gives the age of the Sun as approximately 5 billion years. The

chart shows much younger ages for stars A and B, and a much longer age for star D.

10. Based on studies of rocks, among other things, the Earth is at least 4 billion years old. Planets

have also recently been discovered around other stars. Could the star that formed supernova

1987A have had a planet as old as the Earth? Explain how you know this.

Answer: No, planets as old as the Earth could not have existed around the star that formed

SN 1987A. Supernova explosions results from very massive stars, and these live

for much less than a billion years.

Science Topic Outreach Posters Page 4