Earth’s Materials MCQ PS Answers – Science Homework Answer Guides

1.
1 pt(s).

In a school canteen pupils put their empty cans in recycling bins. The cans can be made from steel or aluminium. One of the bins contains 150 metal cans. There are 80 aluminium cans. How many steel cans are there?

150

230


2. 1 pt(s).	In a school canteen pupils put their empty cans in recycling bins. The cans can be made from steel or aluminium. The bin contained 200 metal cans. 50% of the cans were made from aluminium. How many aluminium cans were there?
	A.	400
	B.	100
	C.	200
	D.	50

3.
1 pt(s).

The bar graph below shows the percentage of each metal present in nichrome wire. What percentage of nichrome wire is manganese?

10%

20%

4.
1 pt(s).

The bar graph below shows the percentage of each metal present in nichrome wire. Which metal makes up 12% of nichrome wire?

Nickel

Iron

Chromium

Manganese

5.
1 pt(s).

The bar graph below shows the percentage of each metal present in nichrome wire. A reel of nichrome wire weighs 200 g. Calculate the mass of nickel in the reel of nichrome wire.

75g

150g

175g

20g

6.
1 pt(s).

The following apparatus was used to investigate the ability of different composts to hold water. Which variables should be kept constant to allow a valid comparison to be made?

1, 3 and 4

2, 3 and 4

1, 2 and 3

1, 2 and 4

7.
1 pt(s).

The table gives information about the mass of scrap steel imported into the UK. Calculate the average mass of scrap steel imported for the years shown.

1200

240

200

2000

8.
1 pt(s).

The cross section below shows sedimentary rock layers containing fossils. Assuming that these rock layers have not been overturned, which fossil is in the layer that was formed most recently?