Benchmark 3 Review

In an exothermic reaction, 

•  heat is released
• heat is absorbed

The process of nuclear fusion

• decreases temperature
• gives the sun it's energy
• happens on earth
• splits an atom's nucleus

The splitting of a nucleus and releasing large amounts of energy is

• nuclear fusion
• nuclear fission
• half-life
• gamma radiation

What is a measure of the amount of matter in an object?

• weight
• mass
• density
• volume

Which would change if you were to stand on the moon?

• mass
• matter
• weight
• density

Which 2 factors determine the strength of gravity?

• mass and weight of objects
• mass and distance between objects
• size and shape of objects
• kinetic and potential energy

Which is an example of a compound?

(Hint - look for a chemical formula!)

• Carbon (C)

• Air

• Table Salt (NaCl)

• Strontium (Sr)

The speed and direction of an object is ...

• acceleration
• speed
• motion
• velocity

Speeding up, slowing down, and changing direction are all examples of ...

• velocity
• acceleration
• force
• gravity

What is Newton's Third Law?

• Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
• Force = mass x acceleration
• For every action there is an equal and opposite reaction
• all objects pull on other objects