What is the equation to calculate speed?

• speed = distance/time
• speed = time/distance
• speed = time x distance 
• speed = speed/time 

A relationship between two organisms in which one organism benefits and the other is unharmed

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

Honey guide birds alert and direct badgers to bee hives.  The badgers then expose the hives and feed on the honey first.  Then the honey guide birds eat.  

• mutualism
• commensalism
• predation
• competition

What does the strength of gravity between two objects depend upon?

• Mass & distance
• Mass & weight
• Gravity & inertia
• Inertia & mass

An _______ force must act on an object for it to CHANGE it's motion

• balanced
• unbalanced
• gravitational
• electrical

What two quantities must I know to calculate something's speed?

• time and weight
• position and distance
• distance and time
• distance and speed

This type of force resist motion between two surfaces that are pressed together

• contact
• gravity
• friction

The unit of force is

• m/s
• m/s^2
• newton
• kg

The tail of a comet usually faces

• toward the sun
• toward the Earth
• away from the Sun
• away from the Earth

Most of the asteroids are located between the orbits of

• Venus and Earth
• Earth and Mars
  
• Mars and Jupiter
• Jupiter and Saturn