McCullough 7th Science Fall Review 1 - 36

Question 1

What is the difference between an autotroph and a heterotroph?

Accepted Answer

autotrophs make their own food & heterotrophs eat their food, autotrophs use photosynthesis to make food

Question 2

What is the first step to the scientific method

Accepted Answer

stating the problem in the form of a question

Question 3

Do all experiments require the same number of trials?

Accepted Answer

No, but at least three is best for accuracy.

Question 4

What part of the meniscus do you read when reading a graduated cylinder?

Accepted Answer

bottom

Question 5

What is negative tropism?

Accepted Answer

when a plant moves away from a stimulus

Question 6

What is phloem and explain the direction it moves.

Accepted Answer

vascular tissue moving glucose from leaves throughout plant

Question 7

Identify the problem in the following experiment.

Accepted Answer

How do different amounts of light affect mice?

Question 8

What is the base SI unit and the piece of equipment you would use to measure mass?

Accepted Answer

grams; balance scale

Question 9

Which part of the experiment can be changed?

Accepted Answer

variable

Question 10

You've collected information by counting. What type of graph would be best to represent data?

Accepted Answer

bar

Question 11

How can you tell if a plant has a decrease in turgor pressure.

Accepted Answer

It begins to wilt.

Question 12

What are forceps used for?

Accepted Answer

to move small parts around when you are dissecting

Question 13

Does a hypothesis have to be correct?

Accepted Answer

No, it's to help you see to what you have learned.

Question 14

What would you use a hot plate for?

Accepted Answer

to heat a substance

Question 15

What is positive tropism?

Accepted Answer

when the plant moves toward the stimulus

Question 16

Which organelle does in a cell is responsible for getting rid of waste?

Accepted Answer

lysosome

Question 17

When conducting a controlled experiment, how many independent variables should you have?

Accepted Answer

One

Question 18

Identify the independent variable in the following experiment.

Accepted Answer

Amount of light

Question 19

What is the last step to the scientific method

Accepted Answer

Conclusion

Question 20

Identify the hypothesis in the following experiment.

Accepted Answer

If mice are exposed to less light, then the'll sleep less.

Question 21

Identify the dependent variable in the following experiment.

Accepted Answer

any of the previous answers

Question 22

What is the base SI unit and the piece of equipment you would use to measure volume?

Accepted Answer

milliliter; graduated cylinder, centimeter3; meter stick

Question 23

What method should you use to measure the volume of an irregular shaped object?

Accepted Answer

Water Displacement

Question 24

What is wafting?

Accepted Answer

Using your hand to move fumes toward your nose.

Question 25

When would wafting be used?

Accepted Answer

When lab instructions tell you to smell a substance.

Question 26

Which organelle does a plant have that allows it to make its own food?

Accepted Answer

chloroplast

Question 27

Geotropism is a response to:

Accepted Answer

gravity

Question 28

How do scientist organize and record their data?

Accepted Answer

They create tables, They create charts., They create graphs.

Question 29

What should a scientist do after the experiment is completed and results are analysed.

Accepted Answer

Draw a conclusion and communicate the results.

Question 30

What is the base SI unit and the piece of equipment you would use to measure temperature?

Accepted Answer

Degrees Celsius; thermometer

Question 31

What is a hypothesis

Accepted Answer

an educated guess or answer to your problem

Question 32

What is the volume of the magnet?

Accepted Answer

7 cm3

Question 33

How is an animal cell different from a plant cell?

Accepted Answer

A plant cell has a cell wall and animal cells do not., The vacuole in an animal cell is smaller., An animal cell is more circular in shape.

Question 34

Which of the following are components of the cell theory?

Accepted Answer

Cells only come from other cells., All organisms are made of cells., Cell-the basic unit of structure/function for living things.

Question 35

Which is supplying the greater force when the plant has a high turgor pressure?

Accepted Answer

vacuole

Question 36

Phototropism is a response to:

Accepted Answer

light

Question 37

What is tropism?

Accepted Answer

the movement of a plant as a response to a stimulus

Question 38

What is an external stimulus?

Accepted Answer

when plants are made to respond to stimulus outside a plant

Question 39

Thigmotropism is a response to:

Accepted Answer

touch

Question 40

Which organelles can be found in a plant cell and not an animal cell?

Accepted Answer

chloroplasts, cell wall

Question 41

When you are trying to find the volume of a regular shaped object, what tool would you use?

Accepted Answer

ruler or meter stick

Question 42

What is the first step towards seed emergence.

Accepted Answer

absorption of water into the seed

Question 43

Which of the following would be considered limitations of a model?

Accepted Answer

spacing/shapes, size/proportions

Question 44

Place the directions on using a triple beam balance in the proper order.

Accepted Answer

D, A, C, B, E, F

Question 45

What is xylem and what is the direction in which it moves?

Accepted Answer

tubes within a plant that moves water from roots to leaves

Question 46

What is an internal stimulus?

Accepted Answer

when plants are made to respond to stimulus within the plant

Question 47

What is the most important lab safety rule?

Accepted Answer

Follow all instructions given by the teacher.

Question 48

Why is it a good idea to conduct multiple trials?

Accepted Answer

It helps results to be more accurate.

McCullough 7th Science Fall Review 1 - 36

Questions 48

McCullough 7th Science Fall Review 1 - 36

Questions 48