Force and Motion
An eraser falls off of a table. What moves the eraser toward the floor?
a. mass
b. speed
c. friction
d. gravity
D. Gravity
Which part of the water cycle are clouds formed?
a. Condensation
b. Evaporation
c. Transpiration
d. Runoff
a. Condensation
What is an example of a single celled organism?
a. fish
b. bird
c. amoeba
d. human
c. amoeba
Which of the following is a producer?
a. algae
b. mushroom
c. bee
d. human
a. algae
Jesse bakes a chocolate cake with his mom for the class. Was this a physical or chemical reaction and why?
What is a chemical reaction since this is irreversible and a new substance was created.
4 solid items, each with a different mass, are moving at the same speed. Which item would require the most force to stop its motion?
a. a mass of 20 lbs
b. a mass of 10 lbs
c. a mass of 2 lbs
d. a mass of 3 lbs
a. a mass of 20 lbs
Which is most responsible for the uneven heating of the air in the atmosphere? HINT: Think WEATHER
a. condensation
b. radiation
c. conduction
d. convection
d. convection
Why do children resemble their parents?
a. They speak the same language
b. They like the same activities
c. They have similar DNA
d. Children do not resemble their parents
c. They have similar DNA
As more homes have been built in the forest, the deer population has decreased. Which is the most likely cause of this decrease?
a. habitat loss
b. cooler temperatures
c. increase in predators
d. there would not be a decrease
a. habitat loss
Which of these shows a chemical reaction occurring? Choose ALL that apply.
a) molding cheese
b) breaking a light bulb
c) rusting metal
d) melting chocolate
e) making gas
a) molding cheese
c) rusting metal
e) making gas
What can cause a moving object to increase its speed in a direction that moves forward?
a. a decrease in the mass
b. an increase in the mass
c. a force that is acting on the object in the same direction
d. a force acting on the object in
the opposite direction
c. a force that is acting on the object in the same direction
If 5 grams of water is added to 5 grams of salt, how much salt water will be made?
a. 10 grams
b. 5 grams
c. 0 grams
d. 25 grams
a. 10 grams
Which characteristic of a cat is most likely the result of its environment?
a. its food preference
b. its long tail
c. its color
d. its eye shape
a. its food preference
In a rainforest ecosystem, if the population of jaguars suddenly decreased, what would be the effect on the rest of the ecosystem?
a. more plants will grow
b. the nutrition of the soil will increase
c. the rainforest will become overpopulated with the food the jaguars eat
c. the rainforest will become overpopulated with
the food the jaguars eat
Phillip left his bike outside in the rain, and it eventually started getting orange spots on it called rust. The metal mixed with oxygen and caused oxidation on the bike. Was this a chemical or physical reaction?
a chemical reaction since a new substance was created: rust.
On a distance and time graph, which type of line would represent an object that was stopped?
a. a diagonal line
b. a horizontal line
c. no line
d. a line that goes up and then
comes
b. a horizontal line
What would happen to metal tracks during the summer? HINT: what happens to objects when they are heated?
a. change in color
b. increase in length
c. decrease in length
d. conduction
b. increase in length
Which body system processes food to be a source of energy?
a. muscular
b. nervous
c. circulatory
d. digestive
d. digestive
If the zebra population decreased what would most likely happen to the lion population?
a. nothing
b. the lion population would decrease
c. the gazelle population would increase
d. lions would produce more offspring
b. the lion population would decrease
How are the molecules organized in a
1)Solid?
2)Liquid?
3)Gas?
1)Solid: Packed tight
2)Liquid: Packed somewhat loose
3)Gas: Packed very loose and spreading very apart
John walked for 45 minutes. He saw that he traveled further in the first half of his walk than the last. What can he conclude about his walk?
a. He was walking at a constant speed
b. He walked away from home, then back
c. His speed was faster the first half of the walk
d. He walked over a lot of hills
c. His speed was faster the first half of the walk
How are condensation and evaporation similar?
a. both are a result of a change in
thermal energy
b. both cause a decrease in
temperature
c. both are caused by the jet
stream
a. both are a result of a change in
thermal energy
What do multicellular and single celled organisms have in common?
a. both can make food from sunlight
b. they have nothing in common
c. both can get rid of waste materials
d. both can survive all on their own
c. both can get rid of waste materials
What type of ecosystem includes both fresh and salt water?
a. pond
b. lake
c. ocean
d. estuary
d. estuary
In which state are the atoms closest together and show the least energy in movement?
Solid matter has the atoms that are closest together (or dense) and show the least amount of energy moving.