No Activity found to handle Intent { act=android.intent.action.VIEW

Sempre que tento executar a opção de item de menu para visitar o site cadastrado do aluno, apresenta o respectivo erro:

09-27 01:29:01.528 10179-10179/br.com.alura.agenda E/MenuItemImpl: Can't find activity to handle intent; ignoring android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=http://www.google.com }

Alguém poderia me ajudar, por gentileza?

@Override
    public void onCreateContextMenu(ContextMenu menu, View v, final ContextMenu.ContextMenuInfo menuInfo) {

        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
        final Aluno aluno = (Aluno) listaAlunos.getItemAtPosition(info.position);

        MenuItem itemSite = menu.add("Visitar Site");

        Intent intentSite = new Intent(Intent.ACTION_VIEW);

        String site = aluno.getSite();

        if (site.startsWith("http://")){
            site = "http://"+site;
        }
        intentSite.setData(Uri.parse(site));
        itemSite.setIntent(intentSite);

        MenuItem deletar = menu.add("Deletar");
        deletar.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem menuItem) {


                AlunoDAO alunoDAO = new AlunoDAO(ListaAlunosActivity.this);
                alunoDAO.deleta(aluno);
                alunoDAO.close();

                carregaLista();
                return false;
            }
        });

    }