Forces, Motion, and Work
You have four balls. Their masses are 100g, 200g, 300g, and 400g. Which one will accelerate most if they are all thrown with equal force?
A. 100 g ball
B. 200 g ball
C. 300 g ball
D. 400 g ball
At what temperature does water freeze and boil on the Celsius scale?
F. at 0 and 212 degrees Celsius
G. at 32 and 212 degrees Celsius
H. at 0 and 100 degrees Celsius
J. at 32 and 100 degrees Celsius
Which is the freezing point of water?
A. 0 degrees Celsius
B. 32 degrees Celsius
C. 100 degrees Celsius
D. 212 degrees Celsius
C
D
A dog has a gene for a strait tail an 1 gene for a curly tail.Where did the two genes come from?
A. each parent contributed one gene
B. the genes came from the environment
C. both genes came from the dog's father
D. both genes came from the dog's mother
Which of the best explains why a ball that is hit into the air falls to the ground?
A. inertia C. density
B. gravity D. acceleration
When you touch the hot handle of a pot on the stove,what do you experience?
A. radiation
B. insulation
C. conduction
D. convection
Which of the following forms of water has the lowest temperature?
F. melting ice
G. evaporating water
H. boiling water
J. condensing water vapor
One type of poisonous frog has bright yellow skin.Which adaptations would it's parents had.
A. colors that can change
B. colors that warn predators not to eat them
C. colors that mimic other frogs
D. colors that help them hide
Three objects will have different masses but different shapes.Which object will fall the most slowly?
F.the one with the greatest density
G. the one with the greatest velocity
H. the one with the greatest acceleration`
J. the one with the greatest air resistance
Which material slows the transfer of thermal energy the most?
F. steel
G. copper
H. fiberglass
J. aluminum
When hydrogen gas and oxygen gas react ,they burn and form water.What kind of change is this?
F physical
G chemical
H both physical and chemical
J neither physical nor chemical
Which of these forces is not a contact force?
F. friction
H. air resistance
G. gravity
J. kicking a ball
Which of the following has potential energy?
F. a ball that is rolling across the floor
G. a rock sitting at the bottom of a hill
H. a piece of pottery sitting on the edge of a high shelf
J. a hockey stick laying on the garage floor
H. a piece of pottery sitting on the edge of a high shelf
Which of the following is a chemical property of iron?
A. it rusts
B. it melts
C. it attracts magnets
D. it can be hammered into sheets
Car A travels 60 kilometers in 3 hours.Car B travels 40 kilometers in 2 hours.Car A is larger than Car B.Which of the following is true?
F. Car A is traveling faster than Car B.
G. Car B is traveling faster than Car A.
H. Car A and Car B are traveling at the same speed.
J. the speed of the cars can not be compared because they are not the same size.
Which form of energy is a type of kinetic energy?
A. chemical energy
B. energy due to position
C. sound energy
D. elastic energy
You put some water in trays in the freezer.Soon,you have ice cubes.What happens to the tiny particles of water as the water changes to ice?
A. they all move in different directions
B. they move more slowly
C. they move more quickly
D. they move only in one direction