Grade 8 Cycle Test 2014 February 25 - Google Sites: Sign-in

UHS | Grade 8 Cycle Test 2014 1

NAME TEACHER’S COMMENT

TEACHER

CLASS PARENT’S COMMENT

MARK

PERCENTAGE PARENT’S SIGNATURE

HERZLIA MIDDLE SCHOOL

GRADE 8

NATURAL SCIENCE CYCLE TEST

27 FEBRUARY 2014

TIME: 50 Minutes

MARKS:90


INSTRUCTIONS

1. There are 15 pages including a cover page, one Answer Sheet and a Periodic Table. Make sure you have all of them.

2. Answer all questions on the paper in blue or black ink.

3. Read each question carefully before answering it.

4. Pay attention to the mark allocation.

5. Plan your time carefully.

6. All the diagrams should be done in pencil and labelled in blue or black ink. Diagram rules must be followed.

7. Write neatly and legibly.

8. Use the Multiple Choice answer sheets for Question 1.

9. Write in full sentences. No one word answer will be accepted.

10. No colour or highlighter or shading may be used when drawing bar graphs.


MULTIPLE CHOICE ANSWER SHEET

NAME: ______________________________ CLASS:_______

Multiple Choice (use pencil only)

Choose the answer, which you consider most appropriate and cross the corresponding letter on this Answer Sheet.

E.g. If your answer to 1.3 is D, indicate your choice like this:

1.3 A B C D

If more than one cross appears in any line, the answer will be marked wrong.

1.1 A B C D

1.2 A B C D

1.3 A B C D

1.4 A B C D

1.5 A B C D

1.6 A B C D

1.7 A B C D

1.8 A B C D

1.9 A B C D

1.10 A B C D


SECTION A (LIFE & LIVING AND MATTER & MATERIALS) 30

QUESTION 1 MULTIPLE CHOICE 20

Four options are provided as possible answers to the following questions. Each

question has only ONE correct answer. Mark this in the appropriate place on the

Answer Sheet provided.

1.1 The scientist who first arranged elements into a pattern called the Periodic Table:

(2)

A Antoine Lavoisier

B Ernest Rutherford

C Niels Bohr

D Dmitri Mendeleev

1.2 The scientist who in 1931 established that the nucleus contained particles with no charge called neutrons:

(2)

A James Chadwick

B Dmitri Mendeleev

C John Dalton

D Joseph Thomson

1.3 Energy that is stored in an object or system is called: (2)

A Chemical energy

B Electrical energy

C Potential energy

D Radiant energy


1.4 Waste product formed during photosynthesis: (2)

A Glucose

B Carbon dioxide

C Oxygen

D Energy

1.5 Organisms that break down dead organic matter: (2)

A consumers

B carnivores

C herbivores

D decomposers

1.6 Which element is represented by the letter Na? (2)

A Sodium

B Helium

C Oxygen

D Carbon dioxide

1.7 A pure substance is: (2)

A made up only one atom

B made up of two or more atoms of different kinds

C made up of one type of particles throughout

D made up of a metal and non-metal combined together


1.8 Who discovered that negatively charged electrons move in orbits around the positive nucleus?

(2)

A James Chadwick

B Ernest Rutherford

C John Dalton

D Niels Bohr

1.9 An atom has 8 protons and 6 neutrons. What is its atomic number? (2)

A 6

B 5

C 8

D 2

1.10 Lime water can also be called: (2)

A Copper chloride

B Calcium hydroxide

C Iodine solution

D Alcohol

(10X2)= 20


QUESTION 2 ONE WORD ANSWER

Give ONE word/term for each of the following descriptions. Write only the word/term

next to the question number (2.1–2.5). Do not give examples.

2.1 Green pigment in plants

2.2 Smallest units of living organisms

2.3 Energy contained in electromagnetic radiation

2.4 Possible explanation or answer to a question you are investigating

2.5 Factor that a scientist changes purposefully in an experiment

(5X1)= 5

QUESTION 3: MATCHING COLUMNS

Choose an item from COLUMN B that matches a description in COLUMN A. Write

only the letter (A – H) next to the question number (3.1 – 3.5).

COLUMN A COLUMN B

____3.1 Mass number A Groups

____3.2 Columns in the Periodic Table B Negative

____3.3 Neutrons C Atomic number + Neutrons

____3.4 Electrons D Non metal

____3.5 Oxygen element E Metal

F Reaction

G No charge

H Positive

(5X1)= 5


SECTION B (LIFE & LIVING) 34

QUESTION 4 CAMP & PHOTOSYNTHESIS 22

4.1 Study the photograph showing the Grade 8 pupils from last year doing alien popping and answer the questions.

4.1.1 Explain the meaning of invasive alien vegetation. (2)

4.1.2 Paul from Bundi is holding up the alien tree to show the root system.

Why is this root system an advantage to the tree?

(1)

4.1.3 What will be the long term effect of removing alien plants from the

Bundi campsite?

(2)


4.2 Plants produce food by photosynthesis.

4.2.1 Write a word equation for photosynthesis. (6)

4.2.2 Give two reasons why photosynthesis is said to be the “basis of all life

on Earth”. (2)

4.2.3 Study the diagram and answer the questions.

4.2.3.1 Why is the leaf placed in warm alcohol? (1)

4.2.3.2 What is the aim of this experiment? (1)

4.2.3.3 Give a safety precaution for this experiment. (1)


4.2.3.4 Describe the iodine test used in this experiment. (2)

4.2.3.5

Describe the stage of the experiment before the diagram above in 4.2.3. In other words describe the first stage of this experiment.

(3)

QUESTION 5:RESPIRATION 12

5.1 Write a word equation for the process of respiration (5)


5.2 Study the following experiment and answer the questions that follow.

Note: Potassium hydroxide was used to remove carbon dioxide from the air.

5.2.1

Describe the lime water test.

(2) 5.2.1 Describe the lime water test. (2)

5.2.2 What will happen to the lime water in Jar A? Explain your answer. (2)

5.2.3 What will happen to the lime water in Jar B? Explain your answer. (2)

5.2.4 The above experiment would not be allowed to be performed as it contravenes scientific ethics. Explain why.

(1)

A B


SECTION C (MATTER & MATERIALS) 26

QUESTION 6 ATOMS 11

Use the Periodic Table to help you answer this question.

6.1 Name the three main groups in which elements in the Periodic Table are arranged. Give an example of one element for each group.

(6)

GROUP EXAMPLE

6.1.1

6.1.2

6.1.3

6.2 Use the Periodic Table of elements to write down the symbol of an element that: (5)

6.2.1 has 5 protons in the nucleus

6.2.2 has eight electrons in one atom

6.2.3 is in Group 2 and in the second

period

6.2.4 Is a non-metal in Group 1

6.2.5 Has seven neutrons in the nucleus of the atom


QUESTION 7: SCIENTIFIC INVESTIGATION 15

7.1 The Grade 8C class decided to investigate the best type of bait to use for fishing at the Breede River. They recorded their results in the table below.

Type of bait Number of fish caught

Bread 4

Pilchards 8

Maize balls 0

Worms 7

7.1.1 Give a suitable heading for the table. (1)

7.1.2 Give two controlled variables for the investigation. (2)

7.1.3 Suggest a hypothesis for the investigation. (1)


7.1.4 Draw a bar graph using the information in the table on page 14 (9)

7.1.5 Give a conclusion for this investigation. (2)

Documents

Grade 8 Cycle Test 2014 February 25 - Google Sites: Sign-in