A force that pulls things toward each other.

Burning paper causes what kind of change?

A change in the air pressure means what is about the change?

What kinds of clouds look like feathers in the sky?

What are land-based ecosystems called?

A force that acts when two surfaces touch each other.

True or False? A physical change causes new materials to form.

What is a tool that measures air pressure?

What kind of weather do stratus clouds most likely bring?

What are water-based ecosystems called?

If a car travels 140 kilometers in 2 hours, what is the speed of the car?

The heating of sand at the beach is what type of heat transfer?

Water that falls from the atmosphere is called what?

A cloud at or near the ground is called what?

What is a body of water where freshwater from a river meets and mixes with salt water?

If mass increases, what does gravity do?

A spoon in a mug of hot coffee getting hot is what type of heat transfer?

What tool measures wind speed?

What kinds of clouds bring rain, thunder, and lightning?

Which ecosystem has fertile soil covered with tall grasses?

If an object is not moving, what will make it start moving?

What type of heat transfer is related to air and liquid?

If wind is blowing from the south, which direction will the wind vane point?

How do clouds form?

What type of ecosystem has trees that lose their leaves in the fall/winter?