SCIENCE F.1 UNIT 1 · 2015. 1. 24. · Microsoft Word - SCIENCE F.1 UNIT 1.docx Created Date:...

Science Edited By Able Exercise @ 2015

www.ableeducation.com.hk https://sites.google.com/site/ableexercise/

A Multiple-choice questions

1 Which of the following procedures requires us to put on a pair of safety

goggles in the laboratory?

A Preparing a sugar solution.

B Heating a liquid in a test-‐tube.

C Transferring a salt solution from a reagent bottle to a beaker.

D Measuring the rate of heartbeat.

2 Which of the following equipment can be found in the laboratory to put out

a fire?

(1) Fire blanket

(2) Fire extinguisher

(3) Sand bucket

(4) Fire hose

A (1) and (3) only

B (2) and (4) only

C (1), (2) and (3) only

D (2), (3) and (4) only

3 When something gets into the eye of a student during an experiment,

he/she should

A use a bandage to cover his/her eye.

B wash his/her eye with the eye-‐wash bottle.

C put on a pair of safety goggles to protect his/her eye.

D wash his/her eye with disinfectant.

ABLE EDUCATION CENTRE

UNIT 1 STARTING SCIENCE


4 What is the use of the following piece of apparatus?

A To hold a test-‐tube.

B To hold a dropper.

C To hold a flask.

D To hold a measuring cylinder.

5 To transfer 1.5 mL of a liquid, which of the following piece of apparatus

would be the most suitable?

A D

C

B



6 The minimum number of box of drink on the left that can fill up the bottle

on the right is

A 2.

B 4.

C 6.

D 8.

7 Which of the following symbols are the unit(s) of temperature?

(1) oC

(2) oF

(3) L

(4) m

A (1) and (2) only

B (2) and (3) only

C (1), (2) and (3) only

D (1), (2) and (4) only

8 The first step to use a Bunsen burner is to

A open the air hole.

B close the air hole.

C light a match.

D turn on the gas tap.

250 mL 1 L


*9 To find out the factors which affect the falling speed of a parachute, several

experiments were done. Which of the following experiments can help us

draw a conclusion?

A B

C D

plastic parachute cotton parachute cotton parachute plastic parachute

50 g

plastic parachutes plastic parachutes

50 g 30 g 50 g 30 g

50 g 30 g 50 g



*E10 If the result of an experiment does not agree with the prediction, the

scientist should

A change the result to fit the prediction.

B change the design of the experiment and test again.

C change the observation.

D give up.


B True or false questions

1 We may do experiments according to the procedures designed by

ourselves without getting our teacher’s permission.

2 We should put on a pair of safety goggles when we enter a

laboratory only if we have short sight.

3 Hazard warning labels on the reagent bottles are used to show the

names of the chemicals contained in the bottles.

4 A tripod is used to support the Bunsen burner.

5 When using the Bunsen burner, the laboratory should have good

ventilation.



C Fill-in-the-blanks

1 We should take all to avoid accidents when

doing experiments.

2 Before we use a chemical, we should read the

on the reagent bottle first and then use it carefully.

3 To boil a beaker of water, a should be placed under

the beaker to let it stand on the tripod.

4 The volume of an irregular object can be measured by a

.

5 When the shape of the Bunsen flame is irregular, the colour of the flame

should be .


D Short questions

1 Write down the meaning of each of the following hazard warning labels.

(a) (b) (c)

(a)

(b)

(c)

*2 Describe how you would use the following apparatus to transfer 52 mL of

water to a reagent bottle most accurately. (You may not need to use all of

them.)



E3 What is happening as shown in the following Bunsen burner? What is the

cause of this?

*4 Match the following statements with the five steps involved in a scientific

investigation:

(a) Perhaps air spaces of the soil are filled by rainwater so that the

earthworms cannot breathe and they come out.

(b) The earthworms always come out from the soil after rainfall.

(c) Take some soil with the earthworms as the sample. Add water to the

soil sample until it is full of water.

(d) Why do the earthworms come out from the soil after rainfall but not

on a sunny day?

(e) If there is rainfall, the soil will be flooded with water. This causes the

earthworms to come out from the soil.

(a)

(b)

(c)

(d)

(e)


*5 The following experiment aims at studying the factors that can affect the

time of a parachute takes to reach the ground. Suggest any three of these

factors.

parachute

string

fixed weight



E Long questions

1 We use science apparatus to do experiments. Refer to the photos below and

answer the questions that follow.

(1) (2)

(3)

(4) (5)

a What are the above five pieces of apparatus? What is the use of each

of these pieces of apparatus? Complete the following table.

Name(s) of the piece(s) of

apparatus

Use(s) of the piece(s) of apparatus

(1)

(2)

(3)

(4)

(5)


b Some laboratory apparatus can be represented by simple line drawings.

Prepare simple line drawings for apparatus (2), (4) and (5) in the

spaces provided below.

(2)

(4) (5)

c Use some pieces of apparatus shown above, use simple line drawings

to show how you heat up a beaker of water in the space provided

below. Label all apparatus in your diagram.



**2 Tom had found that a glass vase with a water plant placed near a window

had many gas bubbles stuck on its wall. The number of gas bubbles was the

greatest around noon to two o’clock. He designed an experiment to find out

whether the number of gas bubbles was affected by the light intensity. He

placed a lamp in front of the water plant and changed the light intensity.

The result was recorded in the following table.

Degree of light intensity

(the greater the number, the

higher the light intensity)

1 2 3 4 5

Number of gas bubbles 9 16 21 27 32

a Suggest a method to change the light intensity of the lamp.

b Use the data in the above table, plot a graph in the space provided

below to show the relationship between light intensity and the

number of gas bubbles.

water

gas bubble

water plant

glass vase


c Suggest a condition that should be kept the same throughout the

experiment.

d What conclusion can you draw from this experiment?



card with a mark

**3 A student wanted to test the brightness of two light bulbs of different

brands. He connected each light bulb to a battery as shown in the following

diagrams.

Set-up 1

Set-up 2

Then for each set-‐up, he placed a glass plate with a mark on it at 2 cm

above the light bulb. He put pieces of white paper on top of the glass plate

until the mark could not be seen. The number of pieces of white paper was

recorded.

a The test designed by the student was not a fair test. Why?

b How could the test be improved to become a fair test?

light bulb of

brand A

old battery new battery

light bulb of

brand B

glass plate with a

mark placed above

2 cm

pieces of white paper observe from above


c Suggest two factors which should be kept the same throughout the

test.

d If the number of pieces of white paper used for Set-‐up 1 was 12 and

that for Set-‐up 2 was 8, which brand of light bulb was brighter?

SCIENCE F.1 UNIT 1 · 2015. 1. 24. · Microsoft Word - SCIENCE F.1 UNIT 1.docx Created Date:...

Documents

Transcript of SCIENCE F.1 UNIT 1 · 2015. 1. 24. · Microsoft Word - SCIENCE F.1 UNIT 1.docx Created Date:...