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  • What Floats? What Sinks?: A Look at Density (Lightning Bolt Books)

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Buy from Amazon $42.12$0.01 $45.00 $36.00 $27.00 $18.00 $9.00 Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr 2014 2015 2016 $6.76, Oct 7 4:43 am$7.15, Nov 22 - Dec 9$7.95, Dec 11 - Dec 13$7.90, Dec 15 7:18 pm$7.95, Dec 17 - Dec 20$7.15, Dec 22 - Sep 6$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.90, May 4 4:45 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.70, May 7 8:51 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.95, May 9 2:25 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.79, May 11 10:21 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.62, May 14 5:42 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.59, May 15 1:44 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.29, May 19 1:54 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.09, May 21 5:33 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.93, May 23 3:07 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.70, May 26 5:31 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.48, May 28 6:00 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.42, May 30 8:08 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.32, Jun 2 9:46 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.26, Jun 4 9:39 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.22, Jun 6 8:16 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.14, Jun 9 1:41 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.03, Jun 11 11:29 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$0.96, Jun 14 6:12 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$0.89, Jun 16 4:21 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$0.83, Jun 19 1:08 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.44, Jun 21 7:47 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.48, Jun 22 - Jun 27$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$1.88, Jun 28 - Jul 14$7.15, Dec 22 - Sep 6$6.49, Jul 17 12:12 am$4.46, May 3 - Aug 25$7.15, Dec 22 - Sep 6$5.91, Jul 19 1:57 pm$4.46, May 3 - Aug 25$7.15, Dec 22 - Sep 6$5.64, Jul 21 - Jul 31$4.46, May 3 - Aug 25$7.15, Dec 22 - Sep 6$5.60, Aug 2 - Aug 5$4.46, May 3 - Aug 25$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$3.14, Aug 7 1:46 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$3.07, Aug 10 3:51 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.94, Aug 11 11:40 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.77, Aug 14 8:51 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.67, Aug 17 12:21 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.61, Aug 18 9:24 pm$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.44, Aug 22 3:48 am$7.15, Dec 22 - Sep 6$4.46, May 3 - Aug 25$2.30, Aug 24 4:24 am$7.15, Dec 22 - Sep 6$5.39, Aug 26 - Aug 28$2.19, Aug 26 7:09 am$7.15, Dec 22 - Sep 6$5.39, Aug 26 - Aug 28$2.13, Aug 28 1:17 pm$7.15, Dec 22 - Sep 6$7.12, Aug 30 - Sep 2$2.03, Aug 30 6:49 pm$7.15, Dec 22 - Sep 6$7.12, Aug 30 - Sep 2$1.91, Sep 2 1:24 am$7.15, Dec 22 - Sep 6$5.51, Sep 4 - Sep 6$1.81, Sep 4 9:29 am$7.15, Dec 22 - Sep 6$5.51, Sep 4 - Sep 6$1.75, Sep 6 4:33 pm$7.16, Sep 8 - Sep 19$5.47, Sep 8 - Sep 17$1.66, Sep 8 11:17 pm$7.16, Sep 8 - Sep 19$5.47, Sep 8 - Sep 17$1.57, Sep 11 5:01 am$7.16, Sep 8 - Sep 19$5.47, Sep 8 - Sep 17$1.48, Sep 13 8:10 am$7.16, Sep 8 - Sep 19$5.47, Sep 8 - Sep 17$1.44, Sep 15 9:59 am$7.16, Sep 8 - Sep 19$5.42, Sep 19 2:04 pm$1.29, Sep 19 2:04 pm$7.15, Sep 22 - Nov 12$5.39, Sep 22 - Sep 28$1.13, Sep 24 7:56 am$7.15, Sep 22 - Nov 12$5.39, Sep 22 - Sep 28$1.05, Sep 26 8:03 am$7.15, Sep 22 - Nov 12$5.39, Sep 22 - Sep 28$0.97, Sep 28 9:05 am$7.15, Sep 22 - Nov 12$5.35, Sep 30 9:11 am$0.91, Sep 30 9:11 am$7.15, Sep 22 - Nov 12$5.40, Oct 2 - Oct 3$5.31, Oct 2 - Oct 26$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$5.21, Oct 5 3:08 pm$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$5.02, Oct 7 - Oct 8$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$4.98, Oct 9 10:05 pm$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$4.80, Oct 11 11:46 pm$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$4.46, Oct 14 2:23 am$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$3.12, Oct 17 10:22 am$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$3.08, Oct 18 1:01 pm$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$2.78, Oct 21 9:02 pm$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$2.57, Oct 24 4:12 am$7.15, Sep 22 - Nov 12$5.31, Oct 2 - Oct 26$2.44, Oct 26 7:08 am$7.15, Sep 22 - Nov 12$5.27, Oct 29 - Nov 3$3.14, Oct 29 7:18 am$7.15, Sep 22 - Nov 12$5.27, Oct 29 - Nov 3$4.46, Nov 3 - Nov 23$7.15, Sep 22 - Nov 12$5.04, Nov 9 - Dec 8$4.46, Nov 3 - Nov 23$7.07, Nov 15 - Nov 23$5.04, Nov 9 - Dec 8$4.46, Nov 3 - Nov 23$8.10, Nov 25 - Jan 11$7.95, Nov 25 - Apr 24$5.04, Nov 9 - Dec 8$8.10, Nov 25 - Jan 11$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$9.97, Jan 12 - Jan 26$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$9.98, Jan 27 - Jan 28$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$10.12, Jan 29 - Feb 15$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$15.21, Feb 17 7:57 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$42.12, Feb 19 - Feb 22$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.52, Feb 24 1:15 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.82, Feb 26 - Feb 28$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.77, Mar 3 1:40 am$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.65, Mar 6 11:01 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.59, Mar 8 10:14 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.47, Mar 11 4:57 am$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.41, Mar 13 11:00 am$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.29, Mar 15 4:41 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.23, Mar 18 6:08 am$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.11, Mar 20 2:06 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$13.05, Mar 23 12:36 am$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$12.93, Mar 25 7:05 am$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$12.81, Mar 27 3:54 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$12.75, Mar 30 1:02 am$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$12.69, Mar 31 6:01 am$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$5.03, Apr 2 8:18 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$4.63, Apr 6 7:14 pm$7.95, Nov 25 - Apr 24$5.07, Dec 10 - Apr 24$4.46, Apr 9 - Apr 24OOS $7.95, Apr 27 - May 3$5.16, Apr 27 7:59 pm$4.46, Apr 27 - May 3OOS $7.95, Apr 27 - May 3$5.18, Apr 30 - May 6$4.46, Apr 27 - May 3$11.71, May 6 2:25 am$7.95, May 6 - Oct 27$5.18, Apr 30 - May 6$10.83, May 10 8:04 am$7.95, May 6 - Oct 27$5.10, May 10 8:04 am$9.53, May 13 11:29 am$7.95, May 6 - Oct 27$5.06, May 13 11:29 am$7.95, May 6 - Oct 27$4.62, May 17 1:45 am$3.95, May 17 - May 30$7.95, May 6 - Oct 27$4.33, May 21 12:02 pm$3.95, May 17 - May 30$7.95, May 6 - Oct 27$4.12, May 25 1:14 pm$3.95, May 17 - May 30$7.95, May 6 - Oct 27$3.96, May 30 1:17 am$3.95, May 17 - May 30$7.95, May 6 - Oct 27$3.95, Jun 3 4:31 pm$3.87, Jun 3 4:31 pm$7.95, May 6 - Oct 27$4.46, Jun 8 3:44 am$3.94, Jun 8 3:44 am$7.95, May 6 - Oct 27$3.85, Jun 12 2:14 am$3.85, Jun 12 2:14 am$7.95, May 6 - Oct 27$3.78, Jun 15 9:02 pm$3.66, Jun 15 9:02 pm$7.95, May 6 - Oct 27$3.70, Jun 19 2:30 pm$3.69, Jun 19 2:30 pm$7.95, May 6 - Oct 27$3.95, Jun 23 8:17 am$3.62, Jun 23 8:17 am$7.95, May 6 - Oct 27$4.27, Jun 27 3:21 am$3.54, Jun 27 3:21 am$7.95, May 6 - Oct 27$3.94, Jun 29 5:36 am$3.51, Jun 29 - Jul 7$7.95, May 6 - Oct 27$3.86, Jul 3 10:18 am$3.51, Jun 29 - Jul 7$7.95, May 6 - Oct 27$3.78, Jul 7 3:54 pm$3.51, Jun 29 - Jul 7$7.95, May 6 - Oct 27$3.72, Jul 10 12:53 pm$3.44, Jul 10 - Jul 14$7.95, May 6 - Oct 27$3.66, Jul 14 10:04 am$3.44, Jul 10 - Jul 14$7.95, May 6 - Oct 27$4.45, Jul 18 - Aug 3$3.28, Jul 18 1:40 am$7.95, May 6 - Oct 27$4.45, Jul 18 - Aug 3$3.95, Jul 21 - Aug 3$7.95, May 6 - Oct 27$4.46, Aug 6 10:31 pm$3.46, Aug 6 10:31 pm$7.95, May 6 - Oct 27$5.15, Aug 10 - Aug 18$2.86, Aug 10 6:44 pm$7.95, May 6 - Oct 27$5.15, Aug 10 - Aug 18$2.42, Aug 14 1:22 pm$7.95, May 6 - Oct 27$5.15, Aug 10 - Aug 18$2.06, Aug 18 7:06 am$7.95, May 6 - Oct 27$5.16, Aug 22 - Sep 2$1.69, Aug 22 1:44 am$7.95, May 6 - Oct 27$5.16, Aug 22 - Sep 2$1.38, Aug 25 7:37 pm$7.95, May 6 - Oct 27$5.16, Aug 22 - Sep 2$1.08, Aug 29 1:46 pm$7.95, May 6 - Oct 27$5.16, Aug 22 - Sep 2$0.78, Sep 2 7:42 am$7.95, May 6 - Oct 27$5.12, Sep 6 - Sep 10$0.57, Sep 6 5:33 am$7.95, May 6 - Oct 27$5.12, Sep 6 - Sep 10$0.41, Sep 10 3:38 am$7.95, May 6 - Oct 27$5.13, Sep 12 - Sep 14$0.33, Sep 12 3:23 am$7.95, May 6 - Oct 27$5.13, Sep 12 - Sep 14$0.25, Sep 14 2:34 am$7.95, May 6 - Oct 27$5.10, Sep 17 11:31 pm$0.12, Sep 17 11:31 pm$7.95, May 6 - Oct 27$5.02, Sep 21 9:10 pm$0.01, Sep 21 - Sep 25$7.95, May 6 - Oct 27$6.88, Sep 25 7:29 pm$0.01, Sep 21 - Sep 25$7.95, May 6 - Oct 27$6.72, Sep 29 5:43 pm$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.64, Oct 3 7:30 pm$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.56, Oct 7 10:07 pm$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.52, Oct 10 12:41 am$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.48, Oct 12 2:23 am$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.32, Oct 16 1:01 am$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.28, Oct 18 12:07 am$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.16, Oct 21 9:38 pm$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.12, Oct 23 8:57 pm$3.95, Sep 29 - Oct 27$7.95, May 6 - Oct 27$6.04, Oct 27 7:36 pm$3.95, Sep 29 - Oct 27$8.99, Oct 31 - Nov 17$7.68, Oct 31 - Nov 8$5.88, Oct 31 7:23 pm$8.99, Oct 31 - Nov 17$7.68, Oct 31 - Nov 8$5.80, Nov 4 7:36 pm$8.99, Oct 31 - Nov 17$7.68, Oct 31 - Nov 8$5.72, Nov 6 9:49 pm$8.99, Oct 31 - Nov 17$7.68, Oct 31 - Nov 8$5.68, Nov 8 11:58 pm$8.99, Oct 31 - Nov 17$7.70, Nov 13 - Nov 17$5.52, Nov 13 2:37 am$8.99, Oct 31 - Nov 17$7.70, Nov 13 - Nov 17$6.74, Nov 17 9:48 am$7.95, Nov 21 - Feb 17$7.58, Nov 21 - Nov 26$6.50, Nov 21 6:46 pm$7.95, Nov 21 - Feb 17$7.58, Nov 21 - Nov 26$6.38, Nov 26 5:48 am$7.95, Nov 21 - Feb 17$6.26, Dec 1 1:27 am$3.67, Dec 1 1:27 am$7.95, Nov 21 - Feb 17$6.17, Dec 3 1:08 pm$3.95, Dec 3 - Dec 8$7.95, Nov 21 - Feb 17$6.09, Dec 6 12:39 am$3.95, Dec 3 - Dec 8$7.95, Nov 21 - Feb 17$6.05, Dec 8 12:17 pm$3.95, Dec 3 - Dec 8$7.95, Nov 21 - Feb 17$5.97, Dec 13 2:44 pm$3.70, Dec 13 2:44 pm$7.95, Nov 21 - Feb 17$5.93, Dec 16 4:05 am$3.54, Dec 16 4:05 am$7.95, Nov 21 - Feb 17$5.81, Dec 21 2:05 am$3.30, Dec 21 2:05 am$7.95, Nov 21 - Feb 17$5.72, Dec 26 3:43 pm$3.08, Dec 26 3:43 pm$7.95, Nov 21 - Feb 17$5.61, Dec 31 6:50 am$2.95, Dec 31 6:50 am$7.95, Nov 21 - Feb 17$5.49, Jan 5 12:27 am$2.89, Jan 5 12:27 am$7.95, Nov 21 - Feb 17$7.02, Jan 9 9:24 pm$5.41, Jan 9 9:24 pm$7.95, Nov 21 - Feb 17$6.54, Jan 14 7:12 pm$5.29, Jan 14 7:12 pm$7.95, Nov 21 - Feb 17$5.21, Jan 19 7:20 pm$4.96, Jan 19 7:20 pm$7.95, Nov 21 - Feb 17$5.17, Jan 22 8:34 am$5.01, Jan 22 - Mar 26$7.95, Nov 21 - Feb 17$5.05, Jan 27 10:57 am$5.01, Jan 22 - Mar 26$7.95, Nov 21 - Feb 17$5.01, Jan 22 - Mar 26$5.00, Feb 1 - Feb 17$8.99, Feb 22 - Mar 8$5.01, Jan 22 - Mar 26$4.99, Feb 22 - Mar 2$8.99, Feb 22 - Mar 8$5.01, Jan 22 - Mar 26$5.00, Mar 8 - Mar 14$7.95, Mar 14 - Mar 26$5.01, Jan 22 - Mar 26$5.00, Mar 8 - Mar 14$7.95, Mar 14 - Mar 26$5.83, Mar 26 2:18 pm$5.01, Jan 22 - Mar 26 67,6641,047,181 1,171,875 781,250 390,625 Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr 2015 2016

Price Details

New

Latest $7.95 Mar 26, '16
Highest $8.99 Feb 22, '16
Lowest $6.76 Oct 7, '13
Average $8.58 (30d avg)
$8.19 (90d avg)
$8.19 (180d avg)
$8.07 (365d avg)
$7.62 (Lifetime average)
Added Oct 7, 2013

3rd Party New

Latest $5.83 Mar 26, '16
Highest $7.12 Aug 30, '14
Lowest $3.62 Jun 23, '15
Average $5.00 (30d avg)
$5.12 (90d avg)
$5.65 (180d avg)
$5.16 (365d avg)
$5.06 (Lifetime average)
Added Oct 7, 2013

3rd Party Used

Latest $5.01 Mar 26, '16
Highest $42.12 Feb 19, '15
Lowest $0.01 Sep 21, '15
Average $5.01 (30d avg)
$4.98 (90d avg)
$5.01 (180d avg)
$4.43 (365d avg)
$5.21 (Lifetime average)
Added Oct 7, 2013

Sales Rank

30 day average: 169,246
90 day average: 275,529

Product Description

A rock sinks in the water. A hot air balloon floats in the air. Many objects float and sink. But what makes them move this way? And how do people use floating and sinking in their lives?

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