Science G6

Which of these mixtures will dissolve completely in water?

• salt and sugar

• sugar and sand

• salt and sand

• sugar and flour

The picture shows the human body. At which part of the body is pulse rate often measured?

• forehead

• kneecap

• nose

• wrist

The diagram shows a thermometer. A thermometer is used to measure temperature. What is the scientific unit for temperature?

• s

• N

• m

• °C

The diagram shows an object placed between a light source and a screen. The object casts a shadow on the screen.

Which direction should the object be moved to increase the size of the shadow on the screen?

• downwards

• towards the light source

• towards the screen

• upwards

The picture shows some burning toast in an electric toaster. The electric toaster is switched on.

Which statement gives sensible safety advice when dealing with the burning toast?

• pour water on the toaster

• use a knife to remove the toast from the toaster

• switch the toaster off

• cut the electric cable with a pair of scissors

Which row gives two correct reasons why decomposers are needed in food chains?

• they support decay, they release nutrients

• they release light, to make space for growth

• to make space for growth, they support decay

• they release nutrients, they release light

A student adds a spoonful of bicarbonate of soda to some acid and observes what happens. Which statement is correct?

• no bubbles of gas are given off showing that no new material is formed

• no bubbles of gas are given off showing that a new material is formed

• bubbles of gas are given off showing that no new material is formed

• bubbles of gas are given off showing that a new material is formed

The diagram shows a torch that is switched off. Which is the correct electric circuit diagram when the torch is switched off?

• D

• A

• C

• B

Plants scatter their seeds to prevent their seedlings competing for the same resources. Which statement gives the correct reason why plants scatter their seeds?

• to find new places to grow with nutrients and water

• to find new places to grow with light but no nutrients

• to find new places to grow with water but no light

• to find new places to grow with nutrients but no water

Which statement about weight is true?

• it is a force

• it is an area

• it is a length

• it is a volume