Science Leap Practice

In the modern Periodic Table, elements are arranged

• according to atomic mass.

• according to atomic number.

• in alphabetical order.

• according to the number of neutrons in their nuclei.

What is Cu?

• Copper

• Zinc

• Iron

• carmel

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The atomic number tells you what?  READ THE ANSWERS CAREFULLY

• only the number of electrons

•  only the number of protons

• only the number of neutrons

• the number of both electrons and protons in an atom.

What does the atomic mass tell you? 

• Basically,the number of electrons and protons

• The number of neutrons

• Basically, the number of protons and neutrons

• The number of protons.

What does the C represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

Tags

NGSS.MS-PS1-1

What does the 6 represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

Tags

NGSS.MS-PS1-1

Amazon River dolphins live in groups of up to six dolphins. These groups help the dolphins survive. These are some things Amazon River dolphins do in groups: hunt together, take turns eating and watching for predators, make groups around their young to protect them, whistle and click to talk to one another. A student claims that living in groups helps Amazon River dolphins survive. Which evidence best supports the student’s claim

• The dolphins can see each other.

• The dolphins are able to swim faster.

• The dolphins can play with each other.

• The dolphins are able to protect each other.

Tags

NGSS.MS-LS2-4

The life cycle of humans is similar to the life cycle of dolphins.

Based on their life cycles, how are Amazon River dolphins and humans alike?

• Both change shape as they grow.

• Both are born and then grow larger.

• Both develop bodies that help them swim.

• Both live in groups for protection from predators.

A rancher is trying to predict what will happen when it snows. There is a low hill and a small storage shed on his ranch. The wind usually blows from the east, as shown in the diagram.

In which two places on the ranch will snowdrifts most likely form?

• locations X and Z

• locations W and Z

• locations W and Y

• locations Y and Z

Tags

NGSS.MS-ESS2-5