Science Review 2

A dolphin swims 56 m in 8 sec. and a walrus swims 30 m in 6 sec. Which is faster ?

True or False: When temperature drops, less water vapor can be present in the air.

What law? Forces that act in pairs: for every action, there is an equal but opposite reaction.

A pulley is a _____ with a _____ wrapped around it.

True or False: Gravity always pulls and never pushes.

A pivot point on a lever is called a?

An example of a solution with a solvent is..

Why does a feather drift back and forth as it falls?

What is a heterogeneous mixture?

What is a chemical bond?

What is required to know the velocity of an object?

An instrument for measuring wind speed.

What type of cloud is this?

Energy can never be created or destroyed. The amount of energy in a system remains constant.

Why does a bowling ball have more gravity than a soccer ball?