SCIENCE


 Joe and Sandy did some experiments to show how new rocks can be formed.
Joe used the following materials:
He mixed the materials and left the mixture to go hard.
The solid looked like this.

Sandy put some crystals in a crucible and heated them until they melted.
She let the crucible cool very slowly until the contents went solid.
The solid she tipped out looked like this:


Which of the types of rock is most like Sandy's rock?
Rocks can be broken by weathering when:
          1. Water gets into cracks in rocks.
                    2. The water in the cracks turns into ice and expands.
                              3. The rocks split into smaller pieces.
A rocket was fired above a town. The rocket exploded giving out light and sound at the same time. Shirley was outside the town. She saw the flash of the rocket exploding and heard the bang.
Daniel connected up the following circuit, using a battery, three bulbs and a switch.

 

 

 

 

 

 

 

 

 

 

 

 

Rocks are grouped into three types:
Which of these is most like Joseph's rock?

           sedimentary
                                         igneous
                                                                 metamorphic

 

 

 

 

 

 

 

 

 

igneous
 metamorphic
 sedimentary

 

 

 

 

 

 

 

What else must happen during this part of this weathering process?
The temperature stays the same.
 The temperature falls below freezing point.
 The temperature stays above freezing point.
 Expansion forces the cracks in the rock to close.
 Expansion forces all of the water out of the cracks.

 


Which sentence is true?
She heard the bang first.
 She saw the flash first.
 She heard the bang and saw the flash at the same time.

 

Some people were nearer to the rocket than Shirley.
How did the sound seem to them?
 It was quieter.
           It was louder.
                         It was higher pitched.
                                      It was lower pitched.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The switch is shown in position 'A'.
Which bulb is lit up?
J                K                L

 

Daniel moves the switch from position 'A' to position 'B'.
Which bulbs are alight?
K           L            J 

 

Daniel uses a piece of copper wire to connect points P and Q.
Which bulbs, if any, are lit up?
J           K           L