Forces cannot act on objects from a distance, only through direct contact.
True or False
False
A rubber band stretched around a newspaper has elastic potential energy.
True or False
True
These are the variables that remain the same in an experiment.
Control group or Control or Constants
Once in the leaves, water is exchanged for what as it evaporates?
A. oxygen
B. nitrogen
C. carbon dioxide
C. carbon dioxide
About how much of the Earth's surface is made up of water?
A. 65%
B. 71%
C. 74%
B. 71%
Friction
If an object's kinetic energy is 50J and the energy is 120J, what is its total mechanical energy?
170 or 170J
Part of the scientific method that answers the original question.
A. Results
B. Hypothesis
C. Conclusion
C. Conclusion
What is the name of the process in which water exists the plant as a vapor through stomata?
A. Transpiration
B. Condensation
C. Evaporation
A. Transpiration
DOUBLE JEOPARDY
Approximately how much of Earth's water is fresh, drinkable water?
A. 3%. B. 14%. C. 21%.
A. 3%
DOUBLE JEOPARDY
In what unit are forces measured?
A. Newtons
B. Meters
C. Joules
A. Newtons
A battery being stored in a drawer has what type of potential energy?
A. Gravitational
B. Mechanical
C. Chemical
C. Chemical
This is the prediction about the outcome of an experiment.
A. Conclusion
B. Hypothesis
C. Experiment
B. Hypothesis
Soil provides most of the material for plant growth.
True or False
False
How much of Earth's fresh water is frozen and unavailable for drinking or crops?
A. 49%
B. 57%
C. 75%
C. 75%
Forces are vectors because they have both size and direction.
True
A pencil that is about to fall off of a desk has which specific type of potential energy?
A. Chemical
B. Elastic
C. Gravitational
C. Gravitational
The variable that is the cause or happens first.
Independent variable
What do plant leaves use from the air to make sugars (food) for growth?
A. Hydrogen
B. Oxygen
C. Carbon dioxide
C. Carbon dioxide
Water is related to all forms of _______ on Earth.
A. rock
B. erosion
C. weather
C. weather
What is the scientific name for a push or a pull?
Force
When an object has energy because of its position, it is called _______ energy.
Potential
DOUBLE JEOPARDY
The variable that is measured or is the effect.
Dependent variable
As a plant grows taller and healthier, what happens to the soil in which it is planted?
A. soil decreases
B. soil increases
C. soil does not change
C. Soil does not change
Mrs. Fly loves to drink water.
True or False
False