如表是部分物质的密度,小刚由此提出了密度的一些看法,你认为正确的是( )
0℃、1标准大气压下部分物质的密度(kg/m3)
水
1.0×103
冰
0.9×103
水银
13.6×103
干松木
0.4×103
酒精
0.8×103
铜
8.9×103
煤油
铝
2.7×103
A:固态物质的密度一定比液态物质的密度大
B:同种物质的密度不一定相同
C:体积相同的实心铜块和铝块,铜块质量大
D:密度跟物质质量成正比,跟体积成反
Favorite Books for Kids
◆Me and Marvin Gardens by A. S. King
Image Source: Scholastic
This middle-grade novel is perfect for introducing kids to recycling, but with a fun science fiction story. Obe lives on his family's farmhouse that was built a hundred years ago-and now it's being taken over by developers. While adventuring on the land, he discovers a creature, Marvin Gardens, which only eats plastic. Kids will love this charming story.
Available from Amazon, $11.89
Wrinkle in Time: A Guide to the Universe by Kari Sutherland
Image Source: Disney Publishing World Wide
Kids may get excited to see A Wrinkle in Time. While the original novel may be too hard of a read for them right now, they can dive into the fantastical world the film takes place in with this awesome guide to the characters and locations.
Available from Amazon on March 6, $11.04
◆Rivers of Sunlight by Molly Bang and Penny Chisholm
Get kids going green with a little help from this educational picture book! Filled with excellent artwork and helpful explanations, these pages are filled with important lessons about the Earth. Kids will learn about how the sun keeps the ocean currents(流)moving and how the sun can power all living things—it's pretty amazing.
Available from Amazon, $7.67
◆How to Code a Sandcastle by Josh Funk
Image Source: Penguin Random House
Pearl's sandcastle keeps getting ruined by puppies (who could be mad at that?). So she teams up with her Robot friend Pascal to solve the problem with code(编码). Combining the fun of building a sandcastle with the discovery of coding, a future engineer will love paging through this story.
Available from Amazon on May15, $16.99