STAAR Science Everything

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

Which state of matter has tightly packed molecules?

• solid
• liquid
• gas

Particles of a liquid

• are tightly packed together and stay in a fixed position.
• have no viscosity.
• decrease in volume with increasing temperature.
• are free to move around one another but still touch.

Thermal energy is...

• heat energy.
• the energy of motion
• energy of nuclear processes.
• an indication of physical change.

Lemonade is a special mixture called a 

• substance
• solution
• plasma
• ingredient

A solution is a mixture of one or more substances _________ evenly into another substance.

• dissolved
• evaporated
• carried
• split

What is the unit to MEASURE force?

• Kilogram
• Meter
• Pascal
• Newton

What type of force?

• Magnetic
• Gravitational
• Applied
• Normal

Why is it important for basketball players to wear shoes with tread when playing?

• to increase the speed of the player
• to decrease the force between the player and the floor
• to increase friction between the floor and the player’s feet
• to decrease the amount of force needed for the player to move