Đề thi Olympic Tiếng Anh lớp 7 vòng 5

Câu 1

Botanists identify violets by their flowers and leaves. A common blue violet is shown above. Which plant shown below is another type of violet?

Câu 2

What is the approximate diameter of a fine lead used in mechanical pencils?

Câu 3

You use "teeth-b-brite" toothpaste and recently have seen in the store a new and improved version. You wonder if it really brightens your teeth better than the original formula. Which method is the best way to test its claim?

Câu 4

The diagram above shows the life cycle of a house spider and a monarch butterfly. How do a house spider and a monarch butterfly have similar life cycles?

Câu 5

A model of a helium atom contains 2 protons, 2 neutrons, and 2 electrons. Which model best represents the structure of a helium atom?

Câu 6

All these minerals belong to the same group because each contains the element

Câu 7

Which list identifies the order of events that formed a volcanic crater?

Câu 8

The chart shows whether different objects will scratch rocks. Which list shows these rocks in order from the hardest to the softest?

Câu 9

9. Which step should be completed next?

Câu 10

(1) Test with blue litmus paper.

(2) Dissolve the substance in water.

(3) Look at any changes in the color of the litmus paper.

(4) Grind some of the substance to make a powder.

Brittney wanted to see if a solid substance is an acid or a base. In which order should she proceed the steps above?