grade 7 scince

Which pair is an antagonistic muscle?

• A-B

• D-A

• C-B

• B-D

EARTH CRUST IS MADE OF ________ ______

Ahmed adds an alkali to the field. The acid in the soil reacts with the alkali. What is the

name of this type of reaction?

Electrical circuits can be modelled using water flowing through pipes.

Look at the diagram.

The arrows show the direction of water flow.

• power

• voltage

• current

• electric

what is a joint?

• when 2 bones meet is a joint

• when 2 bones are the same

• when 2 particles join together

• when 3 bones meet each other

draw a current in a series circuit:)

The strength of elecletromagnet can be increased by using:

• copper

• gold

• metal

• iron

which of these contain haemoglobin and trans port oxygen?

• 3

• 4

• 2

• 1

?the process

[------

• a=boiling

  b=freezing

• a=freezing

  b=evaporatiom

• a=melting

  b=boiling

• a=smx

  b=qxz