Science Test Flashcards
The average kinetic energy of the molecules in a substance refers to its
temperature
Calories are units that express the measurement of?
heat
When molecules in a substance vibrate faster and faster it?
gets warmer
How will the rising of a hot air balloon and cold air be different than if it rises in warm air?
it will rise faster in cold air
What happens when an ice cube melts in a glass of water?
heat transfers from the water to the ice
What point does water boil?
212 degrees fahrenheit
Which statement is true about a small glass and a large glass filled with water at the same temperature?
the large glass has more heat
Water freezes at what temperature on the celsius scale?
zero
Which of the following is an example in which kinetic energy is converted to potential energy
A spring is stretched
As you get to the the top of a roller coaster what change is taken place?
kinetic to potential energy
Friction converts the energy of motion to what energy
heat energy
friction is a
force
Friction is caused by the ________ of objects
resistance
Which type of friction acts on a parachute as it falls to the ground?
fluid
Viscosity is a the characteristic of a fluid that resists
flowing
The force that once surface exert on another when the two rub against each other is called
friction
When an object rolls over a surface what type of force is action on it
rolling friction
What’s the correct formula for weight
weight equals mass times gravity
Gravity is force that determines the
the weight of matter
Identify the object that has the greatest gravitational pull
the sun
Where would you find the least gravitational pull
on the moon
The gravitational attraction between two objects depends on the distance between the objects and their
masses
If an object is moving in constant speed and force pushes it will
accelerate
If a force with 10 newtons is acting on an object an additional 6 newton in the same direction is
16 newtons
