Homework

Question	Answer
why does grass on the side of the road stay green?	because it receives runoff water when it rains.
why do the pupils get smaller in the light?	they get smaller to allow less light in.
what is the deference between hypothesis and inference	a hypothesis is an idea which can be tested. an inference, is a conclusion reached after debate
which of these is the dependent variable? water plant	water
which of these is the independent variable? water plant	plant
why does ice melt when the water is hot?	because the temperature affects the molecular structure of the ice.
Define the term Observation	the action or process of closely observing or monitoring something or someone
Define the term Research question	An answerable inquiry into a specific concern or issue
Define the term Dependant variable	A variable which has a value that depends on another
Define the term Independent variable	A variable which has a value that does not depend on another
Which of these statements is an inference? a)the ice melts because of the water temperature. b)does the ice melt because of the temperature of the water?	A
Which of these statements is an hypothesis? a)the ice melts because of the water temperature. b)does the ice melt because of the temperature of the water?	B
Which of these is true? a) Carrot seeds grow faster. b) Tomato seeds grow faster.	A
Which of these is false? a) Carrot seeds grow faster. b) Tomato seeds grow faster.	B
TRUE or FALSE If a cup of coffee has a lid on it, it will stay hot for longer.	TRUE
underwater plants will produce more oxygen in warm water than in cold.	TRUE
Increasing exercise will increase the persons breathing rate.	TRUE
Plants produce more oxygen at night than in day.	FALSE
nocturnal animals have bigger eyes.	TRUE
more exercise means more carbon dioxide is exhaled.	TRUE

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	Created by Hammam Dawood about 7 years ago