8th Science BM 1 Review

Front

Which of the following is classified as an element? NaCl, CO, Na, H₂O

Back

Na

Front

Which part of the atom determines the element’s identity?

Back

Protons

Front

A student rides a bicycle down a hill. At which point do the student and the bicycle have the most potential energy?

Back

At the top of the hill (Point 1).

Front

A student rode a bicycle 15 miles in 90 minutes. What was the student’s average speed in miles per hour?

Back

10 mph

Front

What keeps Earth in its orbit?

Back

the gravity of the sun

Front

What unit do scientists use to measure size and distance in space?

Back

Light Years

Front

A metal body of mass 189 g occupies a volume of 70 cm3. Identify the metal using the chart below: Tungsten, Lead, Aluminum, Iron.

Back

Aluminum

Front

Which of the following compounds is considered an organic compound? Options: C₆H₁₂O₆, H₂O , NaCl , CaCl₂

Back

C₆H₁₂O₆

Front

Gail’s cross-country coach advised her to eat well-balanced meals in order to have plenty of energy for their upcoming track meet. To which transformation of energy is Gail’s coach referring?

Back

chemical energy to mechanical energy

Front

Calculate the net force. Include magnitude AND direction.

Back

362.5 left